FCC ID: 2BFFF-J55 Bluetooth earphone

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Dongguan Tiankai Electronic Technology Co., Ltd. Section 2.911(d)(5)(i) Certification EquipmentType Company name: Dongguan Tiankai Electronic Technology Co., Ltd. Address: Room 401, Building 3, No. 189, Jiangyuan Road, Tangxia Town, Dongguan City, Guangdong Province, China Product Name:Bluetooth earphone FCCID: 2BFFF-J55 Model(s): J55, pro7, pro6, pro4, proS, i4, i5, i5pro, i20, d10, h55, mk56, koolife, k1, k2, k3, k4, k5, k6, TWS 2.911(d)(5)(i) EquipmentType We, [Dongguan Tiankai Electronic Technology Co., Ltd.] (the applicant) certify that the equipment for which authorization is sought through certification is not:

Prohibited from receiving an equipment authorization pursuant to 2.903; of the FCC rules. Identified as an equipment type in the Covered ListNOTE 1 Yours sincerely, Name: Zhaobin Zhou Date: Mar. 18, 2024 Title: Manage Company name: Dongguan Tiankai Electronic Technology Co., Ltd. Signature:

NOTE 1 Covered List; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References;

1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the 2.911(d)(5)(i)EquipmentTypeAttestationv1.2

Dongguan Tiankai Electronic Technology Co., Ltd. Section 2.911(d)(5)(ii) Certification Applicant (Covered List ) Company name: Dongguan Tiankai Electronic Technology Co., Ltd. Address: Room 401, Building 3, No. 189, Jiangyuan Road, Tangxia Town, Dongguan City, Guangdong Province, China Product Name: Bluetooth earphone FCCID: 2BFFF-J55 Model(s): J55, pro7, pro6, pro4, proS, i4, i5, i5pro, i20, d10, h55, mk56, koolife, k1, k2, k3, k4, k5, k6, TWS 2.911(d)(5)(ii) Applicant filing We, [Dongguan Tiankai Electronic Technology Co., Ltd.] (the applicant) certify that, as of the date of the filing of the application, the applicant is not identifiedNOTE 1on the Covered ListNOTE 2, established pursuant to 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name:ZhaobinZhou Date: Mar. 18, 2024 Title: Manage Company name: Dongguan Tiankai Electronic Technology Co., Ltd. Signature:

NOTE 1 Delete option not applicable to this application. NOTE 2 Covered List; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References;

1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the 2.911(d)(5)(ii)ApplicantAttestationv1.3

Dongguan Tiankai Electronic Technology Co., Ltd. Section 2.911(d)(7) USA Agent for Service of Process Company name: Dongguan Tiankai Electronic Technology Co., Ltd. Address: Room 401, Building 3, No. 189, Jiangyuan Road, Tangxia Town, Dongguan City, Guangdong Province, China Product Name: Bluetooth earphone FCCID: 2BFFF-J55 Model(s): J55, pro7, pro6, pro4, proS, i4, i5, i5pro, i20, d10, h55, mk56, koolife, k1, k2, k3, k4, k5, k6, TWS 2.911(d)(7) USA Designated Agent for Service of Process We, [Dongguan Tiankai Electronic Technology Co., Ltd.] (the applicant) designate

[USA MEIHUA TRADING INC]NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. 2.911 (d)(7)USA Agentv1.3 Dongguan Tiankai Electronic Technology Co., Ltd. USA Agent Company name: USA MEIHUA TRADING INC Address: 5379 Pine Valley Ct Boulder CO 80301 United States FRN Number: 0033406166 Contact Name: Harley Quinn Telephone No:1-312-363-9424 Email: meihua-trading-inc@foxmail.com Signature:

Applicant Company name: Dongguan Tiankai Electronic Technology Co., Ltd. Address: Room 401, Building 3, No. 189, Jiangyuan Road, Tangxia Town, Dongguan City, Guangdong Province, China FCC Registration Number (FRN):

0035117001 FCC Grantee Code: 2BFFF Contact Name: Zhaobin Zhou Telephone No: 0769-81282196 Email: 2958968147@qq.com Signature:

Title: Manage Date: Mar. 15, 2024 Title: Manage Date: Mar. 15, 2024 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference;Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the 2.911 (d)(7)USA Agentv1.3

Dongguan Tiankai Electronic Technology Co., Ltd. Agent Authorization Company: Dongguan Tiankai Electronic Technology Co., Ltd. Address: Room 401, Building 3, No. 189, Jiangyuan Road, Tangxia Town, Dongguan City, Guangdong Province, China Product Name: Bluetooth earphone Model Number(s): J55, pro7, pro6, pro4, proS, i4, i5, i5pro, i20, d10, h55, mk56, koolife, k1, k2, k3, k4, k5, k6, TWS Product Description: Bluetooth earphone We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature:

Date: Mar. 18, 2024 Name:

Title:

Company:

Zhaobin Zhou Manage Dongguan Tiankai Electronic Technology Co., Ltd.

Dongguan Tiankai Electronic Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Mar. 18, 2024 Subject; Request for Confidentiality FCC ID: 2BFFF-J55 To Whom It May Concern, Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure External Photos Test Setup Photos Internal Photos User Manual In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

OR For 45 days, pursuant to Public Notice DA 04-1705. For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Zhaobin Zhou Title: Manage

Dongguan Tiankai Electronic Technology Co., Ltd. Model Difference Declaration To Whom It May Concern, We, Dongguan Tiankai Electronic Technology Co., Ltd. (Bluetooth earphone); Trade Mark: KOOLIFE, Model Number: J55, pro7, pro6, pro4, proS, i4, i5, i5pro, i20, d10, h55, mk56, koolife, k1, k2, k3, k4, k5, k6, TWS; All models the function, software and electric circuit are the same, only with model named different. Test sample model: J55. Please contact me if you have any question. Signature:

Name:

Title:

Zhaobin Zhou Manage Date: Mar. 18, 2024