FCC ID L76-TWS250I

L76TWS250I, L76 TWS250I, L76-TWS250I, L76-TWS25OI, L76-TWS2501, L76-TW5250I, L76-TWS2S0I

Koss Corporation Bluetooth True Wireless Earbuds TWS250I

An FCC ID is the product ID assigned by the FCC to identify wireless products in the market. The FCC chooses 3 or 5 character "Grantee" codes to identify the business that created the product. For example, the grantee code for FCC ID: L76-TWS250I is L76. The remaining characters of the FCC ID, -TWS250I, are often associated with the product model, but they can be random. These letters are chosen by the applicant. In addition to the application, the FCC also publishes internal images, external images, user manuals, and test results for wireless devices. They can be under the "exhibits" tab below.

Purchase on Amazon: Bluetooth True Wireless Earbuds

Application: Bluetooth True Wireless Earbuds
Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Short Link: fcc.id/L76-TWS250I
Sources: FCC.gov | FCC.report
Registered By: Koss Corporation - L76 (United States)

App #	Purpose	Date	Unique ID
1	Original Equipment	2021-04-01	vOHzY881bcxGlcAfbWTi5w==

Operating Frequencies

Frequency Range	Power Output	Rule Parts	Line Entry
2.402-2.48 GHz	3.08 mW	15C	1

Exhibits

Document	Type	Submitted Available
Internal Photos	Internal Photos Adobe Acrobat PDF (1700 kB)	2021-03-22 2021-09-18
Internal Photos	Users Manual Adobe Acrobat PDF (1700 kB)	2021-03-22 2021-09-18
User Manual of TWS250i	Users Manual Adobe Acrobat PDF (5279 kB)	2021-03-22 2021-09-18
Test Setup Photos	Test Setup Photos Adobe Acrobat PDF (282 kB)	2021-03-22 2021-09-18
External Photos	External Photos Adobe Acrobat PDF (993 kB)	2021-03-22 2021-09-18
Product Identical Declaration Letter	Cover Letter(s) Adobe Acrobat PDF (55 kB)	2021-03-22 2021-04-01
FCC Confidentiality Letter	Cover Letter(s) Adobe Acrobat PDF (69 kB)	2021-03-22 2021-04-01
Declaration Letter for Model Differences	Cover Letter(s) Adobe Acrobat PDF (113 kB)	2021-03-22 2021-04-01
RF Exposure Info	RF Exposure Info Adobe Acrobat PDF (82 kB)	2021-03-22 2021-04-01
Test Report	Test Report Adobe Acrobat PDF (4564 kB)	2021-03-22 2021-04-01
Label and location of TWS250i	ID Label/Location Info Adobe Acrobat PDF (589 kB)	2021-03-22 2021-04-01
Label and location of HKTWS158	ID Label/Location Info Adobe Acrobat PDF (627 kB)	2021-03-22 2021-04-01
Schematic	Schematics Adobe Acrobat PDF (28 kB)	2021-03-22
Operational Description	Operational Description Adobe Acrobat PDF (173 kB)	2021-03-22
Block Diagram	Block Diagram Adobe Acrobat PDF (11 kB)	2021-03-22
Parts List Part 2	Parts List/Tune Up Info Adobe Acrobat PDF (97 kB)	2021-03-22
PCB Layout Part 2	Schematics Adobe Acrobat PDF (249 kB)	2021-03-22
Parts List Part 1	Parts List/Tune Up Info Adobe Acrobat PDF (97 kB)	2021-03-22
PCB Layout Part 1	Schematics Adobe Acrobat PDF (249 kB)	2021-03-22

Application Forms

Application for Equipment Authorization FCC Form 731 TCB Version

Applicant Information

Applicant's complete, legal business name:	Koss Corporation
FCC Registration Number (FRN):	0014837306
Alphanumeric FCC ID:	L76TWS250I
Unique Application Identifier:	vOHzY881bcxGlcAfbWTi5w==
Line one:	4129 N. Port Washington Avenue
City:	Milwaukee
State:	Wisconsin
Country:	United States
Zip Code:	53212

TCB Information

TCB Application Email Address:	allen.ferry@babt.com
TCB Scope:	A4: UNII devices & low power transmitters using spread spectrum techniques

FCC ID

Grantee Code:	L76
Product Code:	-TWS250I

Person at the applicant's address to receive grant or for contact

Name:	Benton Geimer
Title:	Electroacoustic Engineer

Telephone Number:

4149671518

Extension:

Fax Number:	4149648615
Email:	bgeimer@koss.com

Long-Term Confidentiality

Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: Yes

Short-Term Confidentiality

Does short-term confidentiality apply to this application?: Yes

If so, specify the short-term confidentiality release date (MM/DD/YYYY format): 09/18/2021
Note: If no date is supplied, the release date will be set to 45 calendar days past the date of grant.

Software Defined/Cognitive Radio

Is this application for software defined/cognitive radio authorization? No

Equipment Class

Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant):	Bluetooth True Wireless Earbuds

Related OET KnowledgeDataBase Inquiry

Is there a KDB inquiry associated with this application? No

Modular Equipment

Modular Type: Does not apply

Application Purpose

Application is for: Original Equipment

Composite/Related Equipment

Is the equipment in this application a composite device subject to an additional equipment authorization? No

Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? No

Test Firm Information

Name of test firm and contact person on file with the FCC:

Firm Name: TUV SUD Cert & Testing (China) Co., Ltd.

First Name: Harry

Last Name: Zhou

Telephone Number:

86 755 3332 3281

Extension:

E-mail: harry.zhou@tuv-sud.cn

Grant Comments

Enter any text that you would like to appear at the bottom of the Grant of Equipment Authorization:
Output power is peak conducted.

Set the grant of this application to be deferred to a specified date:
No

Equipment Authorization Waiver

Is there an equipment authorization waiver associated with this application? No

If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded?: No

WILLFUL FALSE STATEMENTS MADE ON THIS FORM ARE PUNISHABLE BY FINE AND IMPRISONMENT (U.S. CODE, TITLE 18, SECTION 1001), AND/OR REVOCATION OF ANY STATION LICENSE OR CONSTRUCTION PERMIT (U.S. CODE, TITLE 47, SECTION 312(a)(1)), AND/OR FORFEITURE (U.S. CODE, TITLE 47, SECTION 503).

SECTION 5301 (ANTI-DRUG ABUSE) CERTIFICATION:

The applicant must certify that neither the applicant nor any party to the application is subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes.

Does the applicant or authorized agent so certify? Yes

Applicant/Agent Certification:

I certify that I am authorized to sign this application. All of the statements herein and the exhibits attached hereto, are true and correct to the best of my knowledge and belief. In accepting a Grant of Equipment Authorization as a result of the representations made in this application, the applicant is responsible for (1) labeling the equipment with the exact FCC ID specified in this application, (2) compliance statement labeling pursuant to the applicable rules, and (3) compliance of the equipment with the applicable technical rules. If the applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure that production units of this equipment will continue to comply with the FCC's technical requirements.

Authorizing an agent to sign this application, is done solely at the applicant's discretion; however, the applicant remains responsible for all statements in this application.

If an agent has signed this application on behalf of the applicant, a written letter of authorization which includes information to enable the agent to respond to the above section 5301 (Anti-Drug Abuse) Certification statement has been provided by the applicant. It is understood that the letter of authorization must be submitted to the FCC upon request, and that the FCC reserves the right to contact the applicant directly at any time.

Signature of Authorized Person Filing: Benton Geirner

Title of authorized signature:

Grants

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

TUV SUD BABT UNLIMITED
Octagon House, Concorde Way Segensworth North
Fareham, PO15 5RL
United Kingdom

Date of Grant: 04/01/2021

Application Dated: 03/22/2021

Koss Corporation

4129 N. Port Washington Avenue

Milwaukee, WI 53212

Attention: Benton Geimer , Electroacoustic Engineer

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:	L76-TWS250I

Name of Grantee:	Koss Corporation

Equipment Class:	Part 15 Spread Spectrum Transmitter
Notes:	Bluetooth True Wireless Earbuds

Grant Notes	FCC Rule Parts	Frequency Range (MHZ)	Output Watts	Frequency Tolerance	Emission Designator
	15C	2402.0 - 2480.0	0.00308

Output power is peak conducted.

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

Koss Corporation
4129 N. Port Washington Avenue
Milwaukee, WI 53212
United States