FCC ID 2AHFT841

Smart Watch

by Shenzhen DO Intelligent Technology Co., Ltd.

Grantee Code: 2AHFT Product Code: 841

Latest application date: 2025-01-23

FCC ID Device Details

FCC ID	2AHFT841
Mirrors	fcc.id \| gov \| fccid.ai
Grantee Code	2AHFT
Product Code	841
Applicant Business	Shenzhen DO Intelligent Technology Co., Ltd. 🇨🇳
Related Domains	youduoyun.com
Equipment Class	Smart Watch
Test Firm	Shenzhen Huaxia Testing Technology Co., Ltd

Operating Frequencies

Frequency Range	Application Purpose	Final Action Date
2402-2480 MHz	Class II permissive change or modification of presently authorized equipment	2025-01-23
2402-2480 MHz	Class II permissive change or modification of presently authorized equipment	2025-01-23
2402-2480 MHz	Class II permissive change or modification of presently authorized equipment	2024-01-16
2402-2480 MHz	Class II permissive change or modification of presently authorized equipment	2024-01-16
2402-2480 MHz	Original Equipment	2024-01-08
2402-2480 MHz	Original Equipment	2024-01-08

Exhibits

Document	Type	Available	File
User Manual1	Users Manual	2025-01-23	PDF 2.3 MB
User Manual2	Users Manual	2025-01-23	PDF 2.3 MB
User Manual	Users Manual	2024-01-16	PDF 5.5 MB
User manual	Users Manual	2024-01-16	PDF 5.4 MB
user manual	Users Manual	2024-01-08	PDF 4.2 MB
Internal Photos1	Internal Photos	2025-01-23	PDF 2.6 MB
Internal Photos2	Internal Photos	2025-01-23	PDF 1.7 MB
Internal Photos	Internal Photos	2024-01-16	PDF 2.1 MB
Internalphoto	Internal Photos	2024-01-16	PDF 4.7 MB
Internalphoto	Internal Photos	2024-01-16	PDF 2.1 MB
Internalphoto	Internal Photos	2024-01-08	PDF 1.7 MB
External Photos1	External Photos	2025-01-23	PDF 4.5 MB
External Photos2	External Photos	2025-01-23	PDF 728.4 KB
External Photos	External Photos	2024-01-16	PDF 4.5 MB
External photos	External Photos	2024-01-16	PDF 2.2 MB
Externalphoto	External Photos	2024-01-08	PDF 728.4 KB
Label Information1	ID Label/Location Info	2025-01-23	PDF 360 KB
Label2	ID Label/Location Info	2025-01-23	PDF 361.2 KB
label and location	ID Label/Location Info	2024-01-16	PDF 545.7 KB
label and location	ID Label/Location Info	2024-01-08	PDF 500.7 KB
SCH	Schematics	2024-01-16	PDF 1.3 MB
test Report	Schematics	2024-01-16	PDF 4.2 MB
Test Setup Photos	Test Setup Photos	2024-01-16	PDF 1.3 MB
Setup photos	Test Setup Photos	2024-01-08	PDF 1.4 MB
Test Setup Photos	Test Setup Photos	2024-01-08	PDF 1.4 MB
Test Report	Test Report	2025-01-23	PDF 3.5 MB
Test Report1	Test Report	2025-01-23	PDF 5.1 MB
Test Report2	Test Report	2025-01-23	PDF 4.1 MB
test Report	Test Report	2024-01-16	PDF 5.4 MB
test Report	Test Report	2024-01-16	PDF 2.2 MB
test Report	Test Report	2024-01-16	PDF 2.5 MB
test Report	Test Report	2024-01-08	PDF 4 MB
test Report	Test Report	2024-01-08	PDF 3.8 MB
test Report	Test Report	2024-01-08	PDF 1.6 MB
test Report	Test Report	2024-01-08	PDF 5 MB
Attestation of Cover List	Attestation Statements	2025-01-23	PDF 115.4 KB
US Agent	Attestation Statements	2025-01-23	PDF 167.6 KB
USA agent	Attestation Statements	2024-01-16	PDF 134.9 KB
cover letter	Attestation Statements	2024-01-16	PDF 94.9 KB
Agent Authorization Letter Template	Cover Letter(s)	2025-01-23	PDF 127.5 KB
FCC Class II PC request letter	Cover Letter(s)	2025-01-23	PDF 250.3 KB
FCC Short & Long Term Confidentiality Request	Cover Letter(s)	2025-01-23	PDF 61.3 KB
Model Difference	Cover Letter(s)	2025-01-23	PDF 241.7 KB
Agent Authorization Letter Templats	Cover Letter(s)	2024-01-16	PDF 137.5 KB
FCC Class II PC request letter	Cover Letter(s)	2024-01-16	PDF 212.3 KB
FCC Short & Long Term Confidentiality Request	Cover Letter(s)	2024-01-16	PDF 52.9 KB
Model Difference Statement	Cover Letter(s)	2024-01-16	PDF 219.5 KB
ANT Report	Cover Letter(s)	2024-01-08	PDF 856.4 KB
Agent Authorization Letter Template	Cover Letter(s)	2024-01-08	PDF 125.1 KB
RF Exposure	RF Exposure Info	2025-01-23	PDF 367 KB
RF Exposure Info	RF Exposure Info	2024-01-16	PDF 360.1 KB
RF Exposure Info	RF Exposure Info	2024-01-08	PDF 366.8 KB
BLOK Metadata only	Block Diagram		PDF 137.2 KB
SCH Metadata only	Schematics		PDF 639.5 KB
OPS Metadata only	Operational Description		PDF 135 KB

Application Information

Application ID	rw5DlLjlf4Kid9FFDEWbkw==
Final Action Date	2025-01-23
Application Purpose	Class II permissive change or modification of presently authorized equipment
Applicant FRN	0025289893
Model	841
Frequency Range	2402-2480 MHz
Equipment Class	DTS - Digital Transmission System
Device Description	Smart Watch
Responsible Party	Wu Dajun, wudj@youduoyun.com , 4006-123-55
Technical Contact	Shenzhen DO Intelligent Technology Co., Ltd., wudj@youduoyun.com
Test Firm	Jack Ai, Shenzhen Huaxia Testing Technology Co., Ltd, szcqa@cqa-cert.com , +8613902988375
TCB Email	anezam@qai.org
TCB Scope	A4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term Confidentiality	No
Long-Term Confidentiality	Yes
Grant Deferral	No
Modular Equipment	Does not apply
Composite Device	Yes
Composite Part	No
Cognitive Radio	No
Authorization Waiver	No
Authorization Waiver Approved	No
Section 5301 Certification	Yes
Related OET Knowledge DataBase Inquiry	No
Grant Comments	C2PC The screen model, motor model, appearance is different including having different supplier.The key differences are the appearance and the model number. Output power listed is conducted power.

Applications

Application ID	Date	Purpose
rw5DlLjlf4Kid9FFDEWbkw==	2025-01-23	Class II permissive change or modification of presently authorized equipment
kdKBlmCG8SWx2/ElCsd1pA==	2025-01-23	Class II permissive change or modification of presently authorized equipment
j4LyjkQ8xoUWPTJJStR9SA==	2024-01-16	Class II permissive change or modification of presently authorized equipment
MRSOjuFO6CsQ4csX/bvJSw==	2024-01-16	Class II permissive change or modification of presently authorized equipment
tGFtxNDz/p5uTqNk3mwteQ==	2024-01-08	Original Equipment
Sjhh/VOKXffC/4c6NSRgyg==	2024-01-08	Original Equipment

Equipment Authorization

Frequency	Output	Rules	Grant Notes
2402-2480 MHz	0.0008000	15C	CC
2402-2480 MHz	0.0013000	15C	CC

Grants

TCB Grant - Application tGFtxNDz/p5uTqNk3mwteQ==

TCB	GRANT OF EQUIPMENT AUTHORIZATION	TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

QAI LABORATORIES LTD
3980 North Fraser Way
Burnaby, BC, V5J5K5
Canada

Date of Grant: 01/08/2024

Application Dated: 01/04/2024

Shenzhen DO Intelligent Technology Co., Ltd.

11th Floor, 3# Building, Guole Tech Park,

Lirong Road, Dalang, Longhua District,

Shenzhen,
China

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Digital Transmission System
Notes:	Smart Watch

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0013

Power listed is the maximum conducted output power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application tGFtxNDz/p5uTqNk3mwteQ==

COPY	FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION	COPY
Certification

Shenzhen DO Intelligent Technology Co., Ltd.
11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District,
Shenzhen,
China

Date of Grant: 01/08/2024

Application Dated: 01/04/2024

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Digital Transmission System
Notes:	Smart Watch
Modular Type:	Does not apply

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0013

Power listed is the maximum conducted output power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application Sjhh/VOKXffC/4c6NSRgyg==

Mail To:

TCB	GRANT OF EQUIPMENT AUTHORIZATION	TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

QAI LABORATORIES LTD
3980 North Fraser Way
Burnaby, BC, V5J5K5
Canada

Date of Grant: 01/08/2024

Application Dated: 01/04/2024

Shenzhen DO Intelligent Technology Co., Ltd.

11th Floor, 3# Building, Guole Tech Park,

Lirong Road, Dalang, Longhua District,

Shenzhen,
China

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Smart Watch

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0008

Power listed is the maximum conducted output power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application Sjhh/VOKXffC/4c6NSRgyg==

COPY	FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION	COPY
Certification

Shenzhen DO Intelligent Technology Co., Ltd.
11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District,
Shenzhen,
China

Date of Grant: 01/08/2024

Application Dated: 01/04/2024

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Smart Watch
Modular Type:	Does not apply

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0008

Power listed is the maximum conducted output power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application rw5DlLjlf4Kid9FFDEWbkw==

Mail To:

TCB	GRANT OF EQUIPMENT AUTHORIZATION	TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

QAI LABORATORIES LTD
3980 North Fraser Way
Burnaby, BC, V5J5K5
Canada

Date of Grant: 01/23/2025

Application Dated: 01/22/2025

Shenzhen DO Intelligent Technology Co., Ltd.

11th Floor, 3# Building, Guole Tech Park,

Lirong Road, Dalang, Longhua District,

Shenzhen,
China

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Digital Transmission System
Notes:	Smart Watch

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0013

C2PC The screen model, motor model, appearance is different including having different supplier.The key differences are the appearance and the model number. Output power listed is conducted power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application rw5DlLjlf4Kid9FFDEWbkw==

COPY	FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION	COPY
Certification

Shenzhen DO Intelligent Technology Co., Ltd.
11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District,
Shenzhen,
China

Date of Grant: 01/23/2025

Application Dated: 01/22/2025

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Digital Transmission System
Notes:	Smart Watch
Modular Type:	Does not apply

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0013

C2PC The screen model, motor model, appearance is different including having different supplier.The key differences are the appearance and the model number. Output power listed is conducted power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application MRSOjuFO6CsQ4csX/bvJSw==

Mail To:

TCB	GRANT OF EQUIPMENT AUTHORIZATION	TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

QAI LABORATORIES LTD
3980 North Fraser Way
Burnaby, BC, V5J5K5
Canada

Date of Grant: 01/16/2024

Application Dated: 01/16/2024

Shenzhen DO Intelligent Technology Co., Ltd.

11th Floor, 3# Building, Guole Tech Park,

Lirong Road, Dalang, Longhua District,

Shenzhen,
China

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Digital Transmission System
Notes:	Smart Watch

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0013

C2PC. The product screen model, motor modelis, Watch appearance, Band shape are changed.RF power listed is conducted..

CC:	This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application MRSOjuFO6CsQ4csX/bvJSw==

COPY	FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION	COPY
Certification

Shenzhen DO Intelligent Technology Co., Ltd.
11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District,
Shenzhen,
China

Date of Grant: 01/16/2024

Application Dated: 01/16/2024

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Digital Transmission System
Notes:	Smart Watch
Modular Type:	Does not apply

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0013

C2PC. The product screen model, motor modelis, Watch appearance, Band shape are changed.RF power listed is conducted..

CC:	This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application kdKBlmCG8SWx2/ElCsd1pA==

Mail To:

TCB	GRANT OF EQUIPMENT AUTHORIZATION	TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

QAI LABORATORIES LTD
3980 North Fraser Way
Burnaby, BC, V5J5K5
Canada

Date of Grant: 01/23/2025

Application Dated: 01/22/2025

Shenzhen DO Intelligent Technology Co., Ltd.

11th Floor, 3# Building, Guole Tech Park,

Lirong Road, Dalang, Longhua District,

Shenzhen,
China

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Smart Watch

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0008

C2PC The screen model, motor model, appearance is different including having different supplier.The key differences are the appearance and the model number. Output power listed is conducted power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application kdKBlmCG8SWx2/ElCsd1pA==

COPY	FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION	COPY
Certification

Shenzhen DO Intelligent Technology Co., Ltd.
11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District,
Shenzhen,
China

Date of Grant: 01/23/2025

Application Dated: 01/22/2025

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Smart Watch
Modular Type:	Does not apply

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0008

C2PC The screen model, motor model, appearance is different including having different supplier.The key differences are the appearance and the model number. Output power listed is conducted power.

CC:	This device is certified pursuant to two different Part 15 rules sections.

TCB Grant - Application j4LyjkQ8xoUWPTJJStR9SA==

Mail To:

TCB	GRANT OF EQUIPMENT AUTHORIZATION	TCB
Certification
Issued Under the Authority of the
Federal Communications Commission
By:

QAI LABORATORIES LTD
3980 North Fraser Way
Burnaby, BC, V5J5K5
Canada

Date of Grant: 01/16/2024

Application Dated: 01/16/2024

Shenzhen DO Intelligent Technology Co., Ltd.

11th Floor, 3# Building, Guole Tech Park,

Lirong Road, Dalang, Longhua District,

Shenzhen,
China

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Smart Watch

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0008

C2PC. The product screen model, motor modelis, Watch appearance, Band shape are changed.RF power listed is conducted.

CC:	This device is certified pursuant to two different Part 15 rules sections.

EAS Grant - Application j4LyjkQ8xoUWPTJJStR9SA==

COPY	FEDERAL COMMUNICATIONS COMMISSION WASHINGTON, D.C. 20554 GRANT OF EQUIPMENT AUTHORIZATION	COPY
Certification

Shenzhen DO Intelligent Technology Co., Ltd.
11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District,
Shenzhen,
China

Date of Grant: 01/16/2024

Application Dated: 01/16/2024

Attention: Wu Dajun

NOT TRANSFERABLE

EQUIPMENT AUTHORIZATION is hereby issued to the named GRANTEE, and is VALID ONLY for the equipment identified hereon for use under the Commission's Rules and Regulations listed below.

FCC IDENTIFIER:	2AHFT841

Name of Grantee:	Shenzhen DO Intelligent Technology Co., Ltd.

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Smart Watch
Modular Type:	Does not apply

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
CC	15C	2402.0 - 2480.0	0.0008

C2PC. The product screen model, motor modelis, Watch appearance, Band shape are changed.RF power listed is conducted.

CC:	This device is certified pursuant to two different Part 15 rules sections.

Mail To: