1. FCC ID
  2. 2AHFT
  3. 2AHFT858

FCC ID 2AHFT858

Smart Watch

by Shenzhen DO Intelligent Technology Co., Ltd.

Grantee Code: 2AHFT   Product Code: 858
Latest application date: 2026-09-30

FCC ID Device Details

FCC ID2AHFT858
Mirrorsfcc.id | gov | fccid.ai
Grantee Code2AHFT
Product Code858
Applicant BusinessShenzhen DO Intelligent Technology Co., Ltd. 🇨🇳
Related Domains youduoyun.com bridgeportadv.com
Equipment ClassSmart Watch
Test FirmShenzhen Huaxia Testing Technology Co., Ltd

Operating Frequencies

Frequency RangeApplication PurposeFinal Action Date
2402-2480 MHzClass II permissive change or modification of presently authorized equipment2026-09-30
2402-2480 MHzClass II permissive change or modification of presently authorized equipment2026-09-30
2402-2480 MHzOriginal Equipment2024-11-19
2402-2480 MHzOriginal Equipment2024-11-18

Exhibits

DocumentTypeAvailableFile
Users ManualUsers Manual2026-09-30PDF 4.1 MB
Users Manual 1Users Manual2024-11-19PDF 640.4 KB
Users Manual 2Users Manual2024-11-19PDF 2.1 MB
Internal PhotosInternal Photos2026-09-30PDF 2.4 MB
External Photos 2Internal Photos2024-11-19PDF 590.6 KB
Internal Photos 1Internal Photos2024-11-19PDF 2.5 MB
Internal Photos 2Internal Photos2024-11-19PDF 2.3 MB
External PhotosExternal Photos2026-09-30PDF 3.5 MB
External Photos 1External Photos2024-11-19PDF 704.2 KB
ID Label/Location InfoID Label/Location Info2026-09-30PDF 331.6 KB
ID Label/Location Info 1ID Label/Location Info2024-11-19PDF 459.8 KB
ID Label/Location Info 2ID Label/Location Info2024-11-19PDF 359.8 KB
Test Setup Photos 1Test Setup Photos2026-09-30PDF 286.5 KB
Test Setup Photos 2Test Setup Photos2026-09-30PDF 2 MB
Test Setup PhotosTest Setup Photos2024-11-19PDF 957.3 KB
ANT Test ReportTest Report2026-09-30PDF 353.2 KB
Test ReportTest Report2026-09-30PDF 2.8 MB
Test ReportTest Report2026-09-30PDF 4.5 MB
ANT Test Report 1Test Report2024-11-19PDF 640.7 KB
ANT Test Report 2Test Report2024-11-19PDF 1,020.7 KB
Test Report 1Test Report2024-11-19PDF 5.1 MB
Test Report 1Test Report2024-11-18PDF 5.5 MB
Test Report 2Test Report2024-11-18PDF 5.3 MB
Test Report 3Test Report2024-11-18PDF 2.1 MB
Attestation StatementsAttestation Statements2026-09-30PDF 108.1 KB
US agentAttestation Statements2026-09-30PDF 144 KB
Attestation StatementsAttestation Statements2024-11-19PDF 103.4 KB
US agentAttestation Statements2024-11-19PDF 153.6 KB
Agent AuthorizationCover Letter(s)2026-09-30PDF 138.7 KB
C2PC LetterCover Letter(s)2026-09-30PDF 158.8 KB
Long term Confidentiality LetterCover Letter(s)2026-09-30PDF 142 KB
Agent AuthorizationCover Letter(s)2024-11-19PDF 90.4 KB
Long term Confidentiality LetterCover Letter(s)2024-11-19PDF 91.5 KB
Model DifferenceCover Letter(s)2024-11-19PDF 817.9 KB
RF Exposure Info 1RF Exposure Info2026-09-30PDF 138.9 KB
RF Exposure Info 2RF Exposure Info2026-09-30PDF 160.8 KB
RF Exposure Info 3RF Exposure Info2026-09-30PDF 5.1 MB
RF Exposure Info 4RF Exposure Info2026-09-30PDF 4.9 MB
RF Exposure Info 5RF Exposure Info2026-09-30PDF 1.1 MB
RF Exposure Info 1RF Exposure Info2024-11-19PDF 4.3 MB
RF Exposure Info 2RF Exposure Info2024-11-19PDF 4.2 MB
Block Diagram Metadata onlyBlock DiagramPDF 171.7 KB
Schematics Metadata onlySchematicsPDF 284.2 KB
Operational Description Metadata onlyOperational DescriptionPDF 134.7 KB
BOM Metadata onlyParts List/Tune Up InfoPDF 69.9 KB

Application Information

Application IDcHBMLJLyiAXxPM3rqY0KQw==
Final Action Date2026-09-30
Application PurposeClass II permissive change or modification of presently authorized equipment
Applicant FRN0025289893
Model858
Frequency Range2402-2480 MHz
Equipment ClassDTS - Digital Transmission System
Device DescriptionSmart Watch
Responsible PartyWu Dajun, wudj@youduoyun.com , 4006-123-55
Non-Technical ContactYong Liu, Bridgeport Advisory LLC, yliu@bridgeportadv.com , (708)680-6688
Test FirmJack Ai, Shenzhen Huaxia Testing Technology Co., Ltd, szcqa@cqa-cert.com , +8613902988375
TCB Emailtcb@metlabs.com
TCB ScopeA4: UNII devices & low power transmitters using spread spectrum techniques
Short-Term ConfidentialityNo
Long-Term ConfidentialityYes
Modular EquipmentDoes not apply
Composite DeviceYes
Cognitive RadioNo
Authorization WaiverNo
Authorization Waiver ApprovedNo
Section 5301 CertificationYes
Related OET Knowledge DataBase InquiryNo

Applications

Application IDDatePurpose
cHBMLJLyiAXxPM3rqY0KQw==2026-09-30Class II permissive change or modification of presently authorized equipment
77t908IOsDJm6Ob6rTFh3A==2026-09-30Class II permissive change or modification of presently authorized equipment
gPVDXJHk0II4+siAJvHUKw==2024-11-19Original Equipment
HtGgLtD8c8MsjAbtdXB6Zg==2024-11-18Original Equipment

Equipment Authorization

FrequencyOutputRulesGrant Notes
2402-2480 MHz0.004600015CCC
2402-2480 MHz0.003700015CCC

Grants

TCB Grant - Application HtGgLtD8c8MsjAbtdXB6Zg==

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

  Eurofins Electrical and Electronic Testing NA, Inc
914 W. Patapsco Avenue
Baltimore, MD 21230-3432
 Date of Grant: 11/18/2024

Application Dated: 11/18/2024
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:  2AHFT858
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 0.0046  

Output power listed is conducted. Highest reported SAR for Head (front of face 10mm) and extremity (wrist-worn 10g SAR) are 0.16W/kg, <0.10W/kg respectively.

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

EAS Grant - Application HtGgLtD8c8MsjAbtdXB6Zg==

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: 11/18/2024

Application Dated: 11/18/2024
 
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:  2AHFT858
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 0.0046  

Output power listed is conducted. Highest reported SAR for Head (front of face 10mm) and extremity (wrist-worn 10g SAR) are 0.16W/kg, <0.10W/kg respectively.


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

TCB Grant - Application gPVDXJHk0II4+siAJvHUKw==

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

  Eurofins Electrical and Electronic Testing NA, Inc
914 W. Patapsco Avenue
Baltimore, MD 21230-3432
 Date of Grant: 11/19/2024

Application Dated: 11/18/2024
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:  2AHFT858
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 0.0037  

Output power listed is conducted. Highest reported SAR for Head (front of face 10mm) and extremity (wrist-worn 10g SAR) are <0.10W/kg, <0.10W/kg respectively.

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

EAS Grant - Application gPVDXJHk0II4+siAJvHUKw==

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: 11/19/2024

Application Dated: 11/18/2024
 
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:  2AHFT858
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 0.0037  

Output power listed is conducted. Highest reported SAR for Head (front of face 10mm) and extremity (wrist-worn 10g SAR) are <0.10W/kg, <0.10W/kg respectively.


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

TCB Grant - Application cHBMLJLyiAXxPM3rqY0KQw==

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

  Eurofins Electrical and Electronic Testing NA, Inc.
914 W. Patapsco Avenue
Baltimore, MD 21230-3432
Date of Grant: 09/30/2026

Application Dated: 09/30/2026
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:  2AHFT858
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 0.0037  

Class II Permissive Change application as described in this filing. Output power listed is conducted. Highest reported SAR for Head (front of face 10mm) and extremity (wrist-worn 10g SAR) are 0.11W/kg, 0.12W/kg respectively.

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

TCB Grant - Application 77t908IOsDJm6Ob6rTFh3A==

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

  Eurofins Electrical and Electronic Testing NA, Inc.
914 W. Patapsco Avenue
Baltimore, MD 21230-3432
Date of Grant: 09/30/2026

Application Dated: 09/30/2026
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:  2AHFT858
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 0.0046  

Class II Permissive Change application as described in this filing. Output power listed is conducted. Highest reported SAR for Head (front of face 10mm) and extremity (wrist-worn 10g SAR) are 0.11W/kg, 0.12W/kg respectively.

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