2AKZ8-TWS003Bluetooth Wireless Earbuds

Bluetooth Wireless Earbuds TWS003 User Manual Pair with Your Device Tips: Choose " TWS003" The LED light off - The earbuds will turn off automatically if there is no connection within 5 minutes after power on. - The earbuds will automatically turn off if there is no playback within 30 minutes after pairing. - The earbuds will turn off automatically within 5 minutes when turn off the device Bluetooth after paring. Connected Connection > Linpa T03 Bluetooth ® Taking the earbuds from the charging case, the main unit light flashes white and red. The secondary lights off. Pairing issues The left and right sides can be used separately. When one side works, how do I switch my earbuds from single mode to stereo mode? Step 1->: Put them back to the case. Step 2->: Delete “TWS003” from Bluetooth menu on your device, if your device has been connected “TWS003” . Step 3->: Taking the earbuds from the charging case, both earbuds turn on, the main LED flashes red and white, Double-click any earbud, the two earbuds will be forced to pair. After the two earbuds are successfully paired, the secondary light turns off and the main unit LED flashes red and white. Step 4->: After the earbuds is successfully connected to the device, the left and right lights off. Step 5->: If prompted, enter code "0000". Music Previous track Next track Double click(Left) Double click(Right) Short pressPlay/pause songs Answer/End CallPress Reject the callLong press 2 seconds Reject third party callsLong press 1 second Connect a new call while retaining the current callDouble click Controls Double-click to switch between the second party and the third party, and there is a 'didi' prompt when switching calls. Three-party call Calling Take the earbuds from the charging case, it will automatically turn on. Or manually press 3s in the off state. White lights flash 3 times Long press 5 seconds Red lights flash 3 times Turn On/Off Connected to your phone/device Long press for 2 seconds and other voice assistants Activate Siri/Other Voice Control Software Red light flashes once every 1S Earbud status indicator LED steady red LED light offFully charged Charging Low battery Charging 1 Please check the power adaptor if it is 5V with good quality.          2 Clean the thimble and contacts with alcohol to ensure that the headphone charging contact is conductive. 1.5 h FAQ Q: The sound quality of the headphones is not good? A: For all of the headphone products, they need a period of use to get better sound quality. Some components, such as diaphragm unit, transistors, integrated circuits, and capacitance, and can be stabilized after a period of use. Q: Why cannot synchronize the volume? A: Our products are mainly compatible with iPhone, Samsung, and other mainstream mobile phones, Due to too many Android systems, our headsets cannot match all types of Android systems. If the volume cannot synchronize, please manually adjust the volume on the phone or computer. Q: How to deal with the stuck signal of the earphone? A: The Bluetooth headphones use the 2.4G frequency band. When it encounters wifi and the base station signal environment is complex, it will automatically switch to the most suitable frequency band. To avoid the frequency hopping, Please use your mobile phone as close as possible to the headphones. Q: How to keep clear calls? A: When using with a phone call, please turn the volume to the maximum to avoid making calls in noisy environments, such as subways and buses. These places will affect the signal connection and stability of the earbuds. - Do not store the earphone in extreme temperature(under 0 or over 45). - Do not use this earphone during a thunderstorm to avoid irregular function and increased risk of electricshock. - Do not use harsh chemicals or strong detergents to clean the earbuds. - Keep the earbuds dry Maintenance: Since our product has a built-in battery, and the battery itself has power consumption issues, please make sure to charge the headset and charging box once a week to prevent the protection board from protecting itself and causing the battery to run low. Attention Model: TWS003 Standby Time: One year Talk/Playing Time: 30 hours (50% volume) Bluetooth Standard: V5.0 Frequency Range: 2.402GHz-2.48GHz Operating Range: 33 feet/10 meters (No obstacles) Earphone Battery/Charging Case: 45mah/350mah Charging Time Earphones/Charging Case: 1 hour/1.5 hours FCC ID: 2AKZ8-TWS003 Specifications This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Linpa T03 Linpa T03

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD Date: 2020-5-29 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Regarding: FCC ID: To whom it may concern: We, the undersigned, hereby authorize SGS-CSTC Standards Technical Services Co., Ltd. (SGS) Shenzhen Branch and Keny Xu in SGS-CSTC Standards Technical Services Co., Ltd. (SGS) Shenzhen Branch to act on our behalf in all manners relating to application for equipment authorization with respect to the FCC ID above, including signing of all documents relating to these matters. Any and all acts carried out by the agent on our behalf shall have the same effect as acts of our own. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Where our agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by SGS North America, Inc., still resides with DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD This authorization is valid until further written notice from the applicant. Print Name: Sally YangTitle: Manager Signature: On behalf of Company: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD Telephone: 8676982852599 E-mail: [email protected]

DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD Date: 2020-5-29 To: Federal Communications Commission Office of Engineering and Technology Laboratory Division 7435 Oakland Mills Rd. Columbia MD 21046 Regarding: Confidentiality Request regarding application for FCC ID: LONG TERM CONFIDENTIALITY confidential treatment of the documents listed below, associated with the certification application referenced above. Schematic(s) Block Diagrams Operational Descriptions The documents above contain proprietary information not released to the public. Public disclosure of this information may prove harmful to the business of the applicant. Sincerely, Print Name: Sally YangTitle: Manager Signature: On behalf of Company: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD Telephone: 8676982852599 E-mail: [email protected]

ApplicantDeclaration SGS North America Inc. 620 Old Peachtree Road SUITE 100 Suwanee, Georgia 30024 United States Applicant Legal Business Name DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD Address 2A No.60 Lizhong Road Dali Qingxi Town DONGGUAN 523648 China Grantee Code 2AKZ8 FCC ID 2AKZ8-TWS003 Authorized Contact Name Sally Yang Contact Email [email protected] Contact Phone 8676982852599 I, the undersigned, certify that I am an authorized signatory for the Applicant and therefore declare; a) in accordance with 47CFR2.911(d), all of the statements herein and the exhibits attached hereto are true and correct to the best of my knowledge and belief. b) in accepting a Grant of Equipment Authorization issued by a TCB, under the authority of the FCC, as a result of the representations made in this application, the Applicant is responsible for: (1) labeling the equipment with the exact FCC ID as specified in this application, (2) compliance statement labeling pursuant to the applicable rules, (3) compliance of the equipment with the applicable technical rules, c) if the Applicant is not the actual manufacturer of the equipment, appropriate arrangements have been made with the manufacturer to ensure l requirements. d) in accordance with 47 CFR 2.909 and KDB394321, the Applicant has read, understood and agrees to accept that they are the responsible party and agree to abide by their responsibilities as specified under 47 CFR 2.909 and KDB394321. e) in accordance with ISO17065, FCC KDB641163, FCC KDB610077, KDB394321 and RSP-100, the Applicant has read, understood, accepts and agrees to abide by the post market surveillance requirements. (1) the Applicant understands, accepts and agrees that a sample may be requested for surveillance testing. (2) the Applicant shallmake provisions to always have a production sample available upon request by SGS, FCC and/or ISED. (3) the Applicant shall, upon request by SGS, at the Anse, provide a production sample of the requested product to SGS, FCC and/or ISED as instructed. The sample shall include all support devices, cables, software, accessories or other hardware or software required for evaluation, review, certification and audit surveillance of products certified by SGS. f) neither the Applicant nor any party to the application is subject to a denial of Federal benefits, that includes 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 47CFR 1.20r these purposes. g) the Applicant has read, understood, accepts and agrees to abide by the SGS North America, Inc.(TCB) terms and conditions. Link to CFRs:https://www.fcc.gov/wireless/bureau-divisions/technologies-systems-and-innovation-division/rules-regulations-title-47 Link to KDBs:https://apps.fcc.gov/oetcf/kdb/index.cfm Link to RSP-100: https://www.ic.gc.ca/eic/site/smt-gst.nsf/eng/sf01130.html Applicant Signature: Date: 2020-5-29 Print Name: Sally Yang Title: Manager *NOTE: This declaration cannot be signed by an Agent, it shall be signed by an authorized person listed in the FCC database

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 6 External Photos for SZEM2005004189CR FCC ID:2AKZ8-TWS003 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 6 1 EUT Constructional Details SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 6

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 8 Internal Photos for SZEM2005004189CR FCC ID:2AKZ8-TWS003 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 8 1 EUT Constructional Details SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 7 of 8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 8 of 8

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418903 Page: 1 of 6 Keny Xu EMC Laboratory Manager 1 Cover page SAR Evaluation Report Application No.: SZEM2005004189CR Applicant: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address of Applicant: 2A NO.60, Lizhong Road, Dali, Qingxi Town, Dongguan City, Guangdong Province, China Manufacturer: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address of Manufacturer: 2A NO.60, Lizhong Road, Dali, Qingxi Town, Dongguan City, Guangdong Province, China Factory: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address of Factory: 2A NO.60, Lizhong Road, Dali, Qingxi Town, Dongguan City, Guangdong Province, China Equipment Under Test (EUT): EUT Name: Bluetooth Wireless Earbuds Model No.: Linpa T03, Linpa ANC003, TWS003 ♣ ♣ Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. FCC ID: 2AKZ8-TWS003 Standards: 47 CFR Part 1.1307 47 CFR Part 2.1093 KDB447498D01 General RF Exposure Guidance v06 Date of Receipt: 2020-05-25 Date of Test: 2020-06-04 to 2020-07-09 Date of Issue: 2020-07-29 Test Result : Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418903 Page: 2 of 6 2 Version Revision Record Version Chapter Date Modifier Remark 01 2020-07-29 Original Authorized for issue by: Bill Chen /Project Engineer Eric Fu /Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418903 Page: 3 of 6 3 Contents Page 1 COVER PAGE ........................................................................................................................................ 1 2 VERSION ................................................................................................................................................ 2 3 CONTENTS ............................................................................................................................................ 3 4 GENERAL INFORMATION ..................................................................................................................... 4 4.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 4 4.2 TEST LOCATION ................................................................................................................................ 5 4.3 TEST FACILITY .................................................................................................................................. 5 4.4 DEVIATION FROM STANDARDS ............................................................................................................ 5 4.5 ABNORMALITIES FROM STANDARD CONDITIONS .................................................................................... 5 4.6 OTHER INFORMATION REQUESTED BY THE CUSTOMER .......................................................................... 5 5 SAR EVALUATION ................................................................................................................................. 6 5.1 RF EXPOSURE COMPLIANCE REQUIREMENT ........................................................................................ 6 5.1.1 Standard Requirement ................................................................................................................ 6 5.1.2 Limits .......................................................................................................................................... 6 5.1.3 EUT RF Exposure ....................................................................................................................... 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418903 Page: 4 of 6 4 General Information 4.1 General Description of EUT Power supply: Charging BOX:Rechargeable battery DC 3.7V 350mAh 1.29Wh(Charger by Type-C) Left earphone:Rechargeable battery DC 3.7V 45mAh 0.166Wh(Charger by Charging Box) Right earphone:Rechargeable battery DC 3.7V 45mAh 0.166Wh(Charger by Charging Box) Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V5.0 Spectrum Spread Technology: Frequency Hopping Spread Spectrum(FHSS) Modulation Type: GFSK, Pi/4DQPSK Number of Channels: 79 Channel Spacing: 1MHz Antenna Type: Integral Antenna Gain: 1dBi Remark: Model No.: Linpa T03, Linpa ANC003, TWS003 Only the model Linpa T03 was tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only the color, surface is different. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418903 Page: 5 of 6 4.2 Test Location All tests were performed at: SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch No. 1 Workshop, M-10, Middle section, Science & Technology Park, Shenzhen, Guangdong, China 518057 Telephone: +86 (0) 755 2601 2053 Fax: +86 (0) 755 2671 0594 No tests were sub-contracted. 4.3 Test Facility The test facility is recognized, certified, or accredited by the following organizations: • A2LA (Certificate No. 3816.01) SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory is accredited by the American Association for Laboratory Accreditation(A2LA). Certificate No. 3816.01. • VCCI The 3m Fully-anechoic chamber for above 1GHz, 10m Semi-anechoic chamber for below 1GHz, Shielded Room for Mains Port Conducted Interference Measurement and Telecommunication Port Conducted Interference Measurement of SGS-CSTC Standards Technical Services Co., Ltd. have been registered in accordance with the Regulations for Voluntary Control Measures with Registration No.: G-20026, R-14188, C-12383 and T-11153 respectively. • FCC –Designation Number: CN1178 SGS-CSTC Standards Technical Services Co., L…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418902 Page: 1 of 70 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZEM2005004189CR Applicant: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address of Applicant: 2A NO.60, Lizhong Road, Dali, Qingxi Town, Dongguan City, Guangdong Province, China Manufacturer: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address of Manufacturer: 2A NO.60, Lizhong Road, Dali, Qingxi Town, Dongguan City, Guangdong Province, China Factory: DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO., LTD Address of Factory: 2A NO.60, Lizhong Road, Dali, Qingxi Town, Dongguan City, Guangdong Province, China Equipment Under Test (EUT): EUT Name: Bluetooth Wireless Earbuds Model No.: Linpa T03, Linpa ANC003, TWS003 ♣ ♣ Please refer to section 2 of this report which indicates which model was actually tested and which were electrically identical. FCC ID: 2AKZ8-TWS003 Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2020-05-25 Date of Test: 2020-06-04 to 2020-07-09 Date of Issue: 2020-07-29 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418902 Page: 2 of 70 Revision Record Version Chapter Date Modifier Remark 01 2020-07-29 Original Authorized for issue by: Bill Chen /Project Engineer Eric Fu /Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418902 Page: 3 of 70 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Other requirements Frequency Hopping Spread Spectrum System Hopping Sequence 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.247(a)(1),(g),(h) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Peak Output Power 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.5 47 CFR Part 15, Subpart C 15.247(b)(1) Pass 20dB Bandwidth 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.7 47 CFR Part 15, Subpart C 15.247(a)(1) Pass Carrier Frequencies Separation 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.2 47 CFR Part 15, Subpart C 15.247a(1) Pass Hopping Channel Number 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.3 47 CFR Part 15, Subpart C 15.247a(1)(iii) Pass Dwell Time 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.4 47 CFR Part 15, Subpart C 15.247a(1)(iii) Pass Conducted Band Edges Measurement 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.6 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 7.8.8 47 CFR Part 15, Subpart C 15.247(d) Pass Radiated Emissions which fall in the restricted bands 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.4,6.5,6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Remark: Model No.: Linpa T03, Linpa ANC003, TWS003 Only the model Linpa T03 was tested, since according to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions were identical for all the above models, with only the color, surface is different. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM200500418902 Page: 4 of 70 3 Contents Page 1 COVER PAGE ..................................................................................................................................... 1 2 TEST SUMMARY ................................................................................................................................. 3 3 CONTENTS ......................................................................................................................................... 4 4 GENERAL INFORMATION .................................................................................................................. 6 4.1 DETAILS OF E.U.T. ......................................................................................................................... 6 4.2 DESCRIPTION OF SUPPORT UNITS .................................................................................................... 7 4.3 MEASUREMENT UNCERTAINTY ......................................................................................................... 7 4.4 TEST LOCATION ............................................................................................................................. 8 4.5 TEST FACILITY ............................................................................................................................... 8 4.6 DEVIATION FROM STANDARDS ......................................................................................................... 8 4.7 ABNORMALITIES FROM STANDARD CONDITIONS ................................................................................. 8 5 EQUIPMENT LIST ............................................................................................................................... 9 6 RADIO SPECTRUM TECHNICAL REQUIREMENT ............................................................................12 6.1 ANTENNA REQUIREMENT ................................................................................................................12 6.1.1 Test Requirement: ..................................................................................................................12 6.1.2 Conclusion ..............................................................................................................................12 6.2 OTHER REQUIREMENTS FREQUENCY HOPPING SPREAD SPECTRUM SYSTEM HOPPING SEQUENCE ........…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 2 Setup Photos for SZEM2005004189CR FCC ID:2AKZ8-TWS003 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 2 1 Photographs 1.1 Radiated Spurious Emissions Test Setup Above 1GHz