2AVTD-X9TWS

TWS PAIRING AND UNPAIRING: Warm tip: This product is not connected to the mobile phone case, double-click the switch button can switch between Chinese and English mode (factory default to Chinese mode) Special Tips: X9 FCC Statement: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 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: —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. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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.

Shenzhen Tantio Technology Co.,Ltd Agent Authorization Letter 2022-03-28 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen Most Technology Service Co., Ltd. to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Name: Eric Position: CFO Company Name: Shenzhen Tantio Technology Co.,Ltd. Address: 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Tel / Fax 13632893489 / 0755-82681581 E-Mail: [email protected]

Shenzhen Tantio Technology Co.,Ltd Long Term Confidentiality Request Letter 2022-03-29 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR (FCC ID: 2AVTD-X9) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - e.g. Block diagram - e.g. SCH - e.g. Operational Description required to be submitted with this application be permanently withheld from public review. The above documents are company proprietary information that could never get into the possession of your competition. Please contact me if there is any information you may need. Sincerely, Name: Eric Position: CFO Company Name: Shenzhen Tantio Technology Co.,Ltd. Address: 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Tel / Fax 13632893489 / 0755-82681581 E-Mail: [email protected]

Model No.: X9 FRONT VIEW OF SAMPLE BACK VIEW OF SAMPLE Model No.: X9 LEFT VIEW OF SAMPLE RIGHT VIEW OF SAMPLE Model No.: X9 TOP VIEW OF SAMPLE BOTTOM VIEW OF SAMPLE Model No.: X9 PHOTO OF THE ENTIRE SAMPLE

SIZE:5MM*10MM FCC ID: 2AVTD-X9

Because of the small size of the product, the warning is reflected in the instructions Label Loaction

Model No.: X9 Page 1 of 2 INTERNAL PHOTO OF SAMPLE INTERNAL PHOTO OF SAMPLE PCB Antenna Model No.: X9 Page 2 of 2 INTERNAL PHOTO OF SAMPLE PCB INTERNAL PHOTO OF BATTERY

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. RF Exposure Evaluation Report Report Reference No. ..................... : FCC ID.. .......................................... : MTWG22030211-R 2AVTD-X9 Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : April 06, 2022 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : Shenzhen Tantio Technology Co.,LTD Address ............................................ : 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Test specification/ Standard ..........: 47 CFR Part 1.1307 47 CFR Part 2.1093 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : TWS Trade Mark ....................................... : eleror Model/Type reference....................... : X9 Listed Models .................................. : N/A Modulation Type ............................... : GFSK, π/4DQPSK, 8DPSK Operation Frequency ........................ : From 2402MHz to 2480MHz Hardware Version .............................. B3.1 Software Version ............................... V2.16 Rating ............................................... : DC 3.7V(by battery) DC 5V(by USB) Result................................................ : PASS Report No.: MTWG22030211-H Page 2 of 5 T E S T R E P O R T Equipment under Test : TWS Model /Type : X9 Listed Models : N/A Remark N/A Applicant : Shenzhen Tantio Technology Co.,LTD Address : 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Manufacturer : Shenzhen Tantio Technology Co.,LTD Address : 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: MTWG22030211-H Page 3 of 5 1. Revision History Revision Issue Date Revisions Revised By 00 2022.04.06 Initial Issue Alisa Luo Report No.: MTWG22030211-H Page 4 of 5 2. SAR Evaluation 2.1 RF Exposure Compliance Requirement 2.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 4.3.1. Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied. 2.1.2 Limits The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion Report No.: MTWG22030211-H Page 5 of 5 2.1.3 EUT RF Exposure Measurement Data BT classic GFSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402MHz) -1.22 -1.22±1 -0.22 Middle(2440MHz) -1.35 -1.35±1 -0.35 Highest(2480MHz) -2.05 -2.05±1 -1.05 π/4DQPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402MHz) -1.05 -1.05±1 -0.05 Middle(2440MHz) -1.35 -1.35±1 -0.35 Highest(2480MHz) -1.55 -1.55±1 -0.55 8DPSK Test channel Peak Output Power (dBm) Tune up tolerance (dBm) Maximum tune-up Power (dBm) Lowest(2402MHz) -1.04 -1.04±1 -0.04 Middle(2440MHz) -0.88 -0.88±1 0.12 Highest(2480MHz) -1.04 -1.04±1 -0.04 Worst case: 8DPSK Channel Maximum Peak Conducted Output Power (dBm) Maximum tune-up Power Calculated value Exclusion threshold SAR Test Exclusion (dBm) (mW) Middle(2440MHz) -0.88 0.12 1.03 0.33 3.0 Yes .......................THE END OF REPORT.........................

Shenzhen Most Technology Service Co., Ltd. No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. TEST REPORT FCC Rules Part 15.247 Report Reference No. ..................... : FCC ID.. .......................................... : MTWG22030211-R 2AVTD-X9 Compiled by ( position+printed name+signature) .. : File administrators Alisa Luo Supervised by ( position+printed name+signature) .. : Test Engineer Sunny Deng Approved by ( position+printed name+signature) .. : Manager Yvette Zhou Date of issue ..................................... : April 06, 2022 Representative Laboratory Name .: Shenzhen Most Technology Service Co., Ltd. Address ............................................ : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China. Applicant’s name ............................ : Shenzhen Tantio Technology Co.,LTD Address ............................................ : 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Test specification/ Standard ..........: FCC Rules Part 15.247 TRF Originator .................................. : Shenzhen Most Technology Service Co., Ltd. Shenzhen Most Technology Service Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Most Technology Service Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen Most Technology Service Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : TWS Trade Mark ....................................... : eleror Model/Type reference....................... : X9 Listed Models .................................. : N/A Modulation Type ............................... : GFSK, π/4DQPSK, 8DPSK Operation Frequency ........................ : From 2402MHz to 2480MHz Hardware Version .............................. B3.1 Software Version ............................... V2.16 Rating ............................................... : DC 3.7V(by battery) DC 5V(by USB) Result................................................ : PASS Report No.: MTWG22030211-R Page 2 of 45 T E S T R E P O R T Equipment under Test : TWS Model /Type : X9 Listed Models : N/A Remark N/A Applicant : Shenzhen Tantio Technology Co.,LTD Address : 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Manufacturer : Shenzhen Tantio Technology Co.,LTD Address : 806, A block, Taojindi Building, Tenlong Road, Longhua district, Shenzhen, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: MTWG22030211-R Page 3 of 45 Contents 1 REVISION HISTORY ................................................................ 4 2 TEST STANDARDS .................................................................. 5 3 SUMMARY ............................................................................. 6 3.1 General Remarks 6 3.2 Product Description 6 3.3 Equipment Under Test 6 3.4 Short description of the Equipment under Test (EUT) 6 3.5 EUT operation mode 7 3.6 Block Diagram of Test Setup 7 3.7 Test Item (Equipment Under Test) Description* 7 3.8 Auxiliary Equipment (AE) Description 7 3.9 Antenna Information* 7 3.10 Related Submittal(s) / Grant (s) 8 3.11 Modifications 8 4 TEST ENVIRONMENT ............................................................... 9 4.1 Address of the test laboratory 9 4.2 Environmental conditions 9 4.3 Summary of measurement results 10 4.4 Statement of the measurement uncertainty 10 4.5 Equipments Used during the Test 11 5 TEST CONDITIONS AND RESULTS ............................................ 12 5.1 AC Power Conducted Emission 12 5.2 Radiated Emission 15 5.3 Maximum Peak Output Power 21 5.4 20dB Bandwidth 22 5.5 Frequency Separation 26 5.6 Number of hopping frequency 30 5.7 Time of Occupancy (Dwell Time) 32 5.8 Spurious RF Conducted Emission 36 5.9 Pseudorandom Frequency Hopping Sequence 42 5.10 Antenna Requirement 43 6 TEST SETUP PHOTOS OF THE EUT .......................................... 44 7 PHOTOS OF THE EUT ............................................................. 45 Report No.: MTWG22030211-R Page 4 of 45 1 Revision History Revision Issue Date Revisions Revised By 00 2022.04.06 Initial Issue Alisa Luo Report No.: MTWG22030211-R Page 5 of 45 2 TEST STANDARDS The tests were performed according to following standards: FCC Rules Part 15.247 : Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz. ANSI C63.10-2013 : American National Standard for Testing Unlicensed Wireless Devices Report No.: MTWG22030211-R Page 6 of 45 3 SUMMARY 3.1 General Remarks Date of receipt of test sample : 2022.03.28 Testing commenced on : 2022.03.29 Testing concluded on : 2022.04.06 3.2 Product Description Product Name: TWS Model/Type reference: X9 Power Supply： DC 3.7V(by battery) DC 5V(by USB) Testing sample ID： MT22020116 Bluetooth : Supported Type: Bluetooth BR/EDR Modulation: GFSK, π/4DQPSK, 8DPSK Operation frequency: 2402MHz~2480MHz Channel number: 79 Channel separation: 1MHz Antenna type: Ceramic Antenna Antenna gain: 1.8 dBi 3.3 Equipment Under Test Power supply system utilised Power supply voltage : ○ 230V / 50 Hz ○ 120V / 60Hz ○ 12 V DC ○ 24 V DC ● Other (specified in blank below) DC 3.7V(by battery) DC 5V(by USB) 3.4 Short description of the Equipment under Test (EUT) This is a TWS For more details, refer to the user’s manual of the EUT. Report No.: MTWG22030211-R Page 7 of 45 3.5 EUT operation mode The Applicant provides communication tools software(Engineer mode) to control the EUT for staying in contin…

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Model No.: X9 CE TEST SETUP RE TEST SETUP Model No.: X9 RE TEST SETUP