2BTVI-H8OPEN-EAR WIRELESS EARBUDS

FCC ID LABEL: Ca. 4mm x 10mm Label Location FCC ID: 2BTVI-H8

FCC RF Exposure EUT Description: OPEN-EAR WIRELESS EARBUDS Model No.: H8 FCC ID: 2BTVI-H8 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power (dBm) Tune Up Power (dBm) Max Tune Up power (mW) Min test separation distance (mm) Result Limit SAR Test Exclusion EDR 2480 2.73 2±1(3) 1.995 5 0.628 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2512186582-E, Antenna gain = 2.78dBi. Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.628 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f(GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Page 1 of 45 Report No.: HK2512186582-E FCC Test Report Test Report On Behalf of Shenzhen Nuoyin Technology Co., Ltd. For OPEN-EAR WIRELESS EARBUDS Model No.: H8 FCC ID: 2BTVI-H8 Prepared For: Shenzhen Nuoyin Technology Co., Ltd. A302, Wanzhongcheng Clothing Wholesale Market, Xinniu Community, Minzhi Street, Longhua District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Dec. 18, 2025 ~ Jan. 15, 2026 Date of Report: Jan. 15, 2026 Report Number: HK2512186582-E Page 2 of 45 Report No.: HK2512186582-E Test Result Certification Applicant’s Name .................. : Shenzhen Nuoyin Technology Co., Ltd. Address .................................. : A302, Wanzhongcheng Clothing Wholesale Market, Xinniu Community, Minzhi Street, Longhua District, Shenzhen, China Manufacturer's Name ........... : Shenzhen Nuoyin Technology Co., Ltd. Address .................................. : A302, Wanzhongcheng Clothing Wholesale Market, Xinniu Community, Minzhi Street, Longhua District, Shenzhen, China Product Description Trade Mark ............................. : N/A Product Name ......................... : OPEN-EAR WIRELESS EARBUDS Model and/or Type Reference : H8 Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology 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. Date of Test ............................................ : Date (s) of Performance of Tests ............ : Dec. 18, 2025 ~ Jan. 15, 2026 Date of Issue ........................................... : Jan. 15, 2026 Test Result ............................................... : Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 45 Report No.: HK2512186582-E Table of Contents Page 1. Summary ................................................................................................... 5 1.1. Test Standards ............................................................................................................ 5 1.2. Test Procedures and Results ...................................................................................... 5 1.3. Information of the Test Laboratory .............................................................................. 6 1.4. Statement of the Measurement Uncertainty ................................................................ 6 2. General Information ................................................................................. 7 2.1. Environmental Conditions ........................................................................................... 7 2.2. General Description of EUT ........................................................................................ 7 2.3. Description of Test Modes and Test Frequency .......................................................... 8 2.4. Equipments Used during the Test ............................................................................... 9 2.5. Related Submittal(s) / Grant (s) ................................................................................ 10 2.6. Modifications ............................................................................................................. 10 2.7. Description of Test Setup .......................................................................................... 10 2.8. Description of Support Units ..................................................................................... 11 3. Test Conditions and Results ................................................................. 12 3.1. AC Conducted Emissions Test .................................................................................. 12 3.2. Radiated Emissions .................................................................................................. 15 3.3. Maximum Peak Conducted Output Power ................................................................ 23 3.4. 20dB Bandwidth ........................................................................................................ 24 3.5. Frequency Separation .............................................................................................. 27 3.6. Number of Hopping Frequency ................................................................................. 29 3.7. Time of Occupancy (Dwell Time) .............................................................................. 31 3.8. Out-of-Band Emissions ............................................................................................. 34 3.9. Pseudorandom Frequency Hopping Sequence ........................................................ 41 3.10. Antenna Requirement ........................................................................................... 42 4. Test Setup Photos of the EUT ............................................................... 43 5. Photos of the EUT .................................................................................. 45 Page 4 of 45 Report No.: HK2512186582-E ** Issued history ** Revision Description Issued Date Remark Revision 1.0 Initial Test Report Release Jan. 15, 2026 Jason Zhou Page 5 of 45 Report No.: HK2512186582-E 1. Summary 1.1. 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: 2020: American National Standard for Testing Unlicensed Wireless Devices…

Text truncated - open the document above for the full version.

Page 34 of 45 Report No.: HK2512186582-E 3.8. Out-of-Band Emissions Limit In any 100 kHz bandwidth outside the frequency band in which the spread spectrum or digitally modulated intentional radiator is operating, the radio frequency power that is produced by the intentional radiator shall be at least 20 dB below that in the 100 kHz bandwidth within the band that contains the highest level of the desired power, based on either an RF con-ducted or a radiated measurement, pro-vided the transmitter demonstrates compliance with the peak conducted power limits. If the transmitter com-plies with the conducted power limits based on the use of RMS averaging over a time interval, as permitted under paragraph (b)(3) of this section, the attenuation required under this paragraph shall be 30 dB instead of 20 dB. Attenuation below the general limits specified in §15.209(a) is not required. Test Procedure Connect the transmitter output to spectrum analyzer using a low loss RF cable, and set the spectrum analyzer to RBW=100 kHz, VBW= 300 kHz, peak detector , and max hold. Measurements utilizing these setting are made of the in-band reference level, band edge and out-of-band emissions. Test Configuration EUT SPECTRUM ANALYZER Test Results Remark: The measurement frequency range is from 30MHz to the 10th harmonic of the fundamental frequency. The lowest, middle and highest channels are tested to verify the spurious emissions and bandage measurement data. We measured all conditions (DH1, DH3, DH5) and recorded worst case at DH5 and 2DH5 Test plot as follows: Page 35 of 45 Report No.: HK2512186582-E GFSK CH00 CH39 Page 36 of 45 Report No.: HK2512186582-E CH78 Page 37 of 45 Report No.: HK2512186582-E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 38 of 45 Report No.: HK2512186582-E π/4DQPSK CH00 CH39 Page 39 of 45 Report No.: HK2512186582-E CH78 Page 40 of 45 Report No.: HK2512186582-E Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Page 41 of 45 Report No.: HK2512186582-E 3.9. Pseudorandom Frequency Hopping Sequence Test Applicable For 47 CFR Part 15C section 15.247 (a) (1): Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hop-ping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400–2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hop-ping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence Requirement The pseudorandom frequency hopping sequence may be generated in a nice-stage shift register whose 5 th and 9 th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones, for example: the shift register is initialized with nine ones. ● Number of shift register stages:9 ● Length of pseudo-random sequence:2 9 -1=511 bits ● Longest sequence of zeros:8(non-inverted signal) An example of pseudorandom frequency hopping sequence as follows: Each frequency used equally one the average by each transmitter. The system receiver have input bandwidths that match the hopping channel bandwidths of their corresponding transmitter and shift frequencies in synchronization with the transmitted signals. Page 42 of 45 Report No.: HK2512186582-E 3.10. Antenna Requirement Standard Applicable For intentional device, according to FCC 47 CFR Section 15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. And according to FCC 47 CFR Section 15.247, if transmitting antennas of directional gain greater than 6dBi are used, the power shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6dBi. Refer to Statement below for Compliance The manufacturer may design the unit so that the user can replace a broken antenna, but the use of a standard antenna jack or electrical connector is prohibited. Further, this requirement does not apply to intentional radiators that must be professionally installed. Antenna Connected Construction The antenna used in this product is a Ceramic Antenna, need professional installation, not easy to remove. It conforms to the standard requirements. The directional gains of antenna used for transmitting is 2.78dBi. Antenna Page 43 of 45 Report No.: HK2512186582-E 4. Test Setup Photos of the EUT Radiated Emission Page 44 of 45 Report No.: HK2512186582-E AC Conducted Emission RF Conducted Emission Page 45 of 45 Report No.: HK2512186582-E 5. Photos of the EUT Reference to the report: ANNEX A of external photos and ANNEX B of internal photos ---------End of test report---------

Test Model: H8 Radiated Emission AC Conducted Emission RF Conducted Emission