2BAO8RSR1Open Ear Headphones

FCC Warning Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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.

Shenzhen Changying Technology Co., Ltd. Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Shenzhen Changying Technology Co., Ltd. Address: F502, Mingyue Huadu, Gonghe Industrial Road, Gongle Community, Xixiang, Bao’an, Shenzhen Product Name: Open Ear Headphones FCC ID : 2BAO8RSR1 Model(s): RockShine R1 2.911(d)(5)(i) Equipment Type We, [Shenzhen Changying 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 List” NOTE 1 Yours sincerely, Name: Hu Peng Date: Mar. 31, 2023 Title and Company name: Manager; Shenzhen Changying Technology Co., Ltd. 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) Eq uipment Typ e Attestation v1.2

Shenzhen Changying Technology Co., Ltd. Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Changying Technology Co., Ltd. Address: F502, Mingyue Huadu, Gonghe Industrial Road, Gongle Community, Xixiang, Bao’an, Shenzhen Product Name: Open Ear Headphones FCC ID : 2BAO8RSR1 Model(s): RockShine R1 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Changying Technology Co., Ltd.] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to § 1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Hu Peng Date: Mar. 31, 2023 Title and Company name: Manager; Shenzhen Changying Technology Co., Ltd. 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) Applicant Attestation v1.2

< Shenzhen C hangying Technology C o., Ltd. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD21046 Date: Mar. 31, 2023 Subject; Request for Long Term Confidentiality FCC ID: 2BAO8RSR1 To Whom It May Concern, P ursuant to the provisions of the Commission’s 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 P rocedure 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: Hu P eng Title : Manager

Shenzhen Changying Technology Co., Ltd. Letter of Authorization Company: Shenzhen Changying Technology Co., Ltd. Address: F502, Mingyue Huadu, Gonghe Industrial Road, Gongle Community, Xixiang, Bao'an, Shenzhen Product name: Open Ear Headphones Trade name: RockShine Model name: RockShine R1 FCC Identifier: 2BAO8RSR1 We authorize MiCOM LabsInc, 575 Boulder Court, Pleasanton, California94566, USA, to act on our behalf on all matters concerning the above named equipment. Any individual within MiCOM Labs is authorized to act on our behalf and take action on the application. We declare that MiCOM LabsInc, 575 Boulder Court, Pleasanton, California 94566, USA, is allowed to forward all information related to the approval project to the Federal Communication Commission 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. Name: Hu Peng Date: Mar. 31, 2023 Title: Manager Signature of applicant:

Model: RockShine R1 Model: RockShine R1 Model: RockShine R1 Model: RockShine R1

FCC ID LABEL: Label Location: Model: RockShine R1 FCC ID: 2BAO8RSR1

Model: RockShine R1 Model: RockShine R1 Model: RockShine R1 Antenna

MPE ESTIMATION FCC ID: 2BAO8RSR1 1. Limit for Portable Equipment Exposure Frequency 1-g SAR 100MHz-6GHz 3.0 According to 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 f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 2. Estimation Result BT GFSK(Worst case): Frequency (MHz) Reading result(dBμV/m) PK Output Power (dBm) Output Power(mW) Te s t Separation Distance (mm) Measurement Result 1-g SAR 2441 99.83 4.63 2.904 5 0.9074 3.0 Note: PK Output Power = Conducted Power. Conducted Power see the test report UNIA23032709ER-61. The SAR evaluation is not required. ------The End------

SMD
CERAMIC
ANTENNA
Data
Sheet CS-2450-31 For 2400-2484MHz 3.2x1.6mm [EIA1206] Data
Sheet SMD CERAMIC ANTENNA LWA 形状 和 尺 寸(单 位: mm ) S h a p es A n d D im e n s i o n s D im e n s i o n s i n mm 0 . 55±0 .1 3 .1 0 ± 0 .1 0 1. 55 ± 0 .1 00 .4 0 ± 0 .2 0 H ■ 重 量 轻 ， 结 构 紧 凑 Li g h t w e i g h t , c o m p ac t ■ 宽 带 大 ， 低 成 本 Wi de ba n d wi d t h , l ow cos t ■ 高 增 益 内 置 天 线 B u il t- i n a n t e nn a w i t h hi gh g a in 特 征 F eatu r e 应 用 A pp li cat i o n ■ 蓝 牙 技 术 Bl ue t oo t h ■ 齐 格 比 系 统 Zi g bee s y s t e m s ■ 其 它 e t c ... TECHNOLOGY 2.4 G Hz 频 段 IEEE 80 2.11 g / b 编 码 P a r t Nu m be rin g Sy ste m CS - 2450 - 31 - A Size Material FrequencyType Data
Sheet SMD CERAMIC ANTENNA TECHNOLOGY 电 气 特 性 El ect ri cal C h a r acte ri st i c s p e r lin e ( TA = 2 5 °C ) 2400~2483 MHz 2. 58 dB i 72. 30 % 50 频 带 Fr e q ue n c y B a n d 极 化 P o l a riz a t i o n * 增 益 P eak Ga in * 效 率 Effi c i e n c y 阻 抗 Im p e n da n ce 参 数 P a r a m e t e r 规 格 S p ec ifi ca t i o n 单 位 U ni t s W 线极化 评价板 Evaluation Board Data
Sheet SMD CERAMIC ANTENNA TECHNOLOGY 推荐回流剖面 RECOMMENDED REFLOW PROFILE °C °C °C Data
Sheet SMD CERAMIC ANTENNA TECHNOLOGY 胶带尺寸 TAPE DIMEN SIONS F ea t u r e S p ec ifi ca t i o n s T o l e r a n ces W 8 . 00±0 . 3 0 P4. 00 .1 0 E1.7 5 .1 0 F 3 . 50 .1 0 P2 2. 00 .1 0 D1. 50 + 0 .1 0 - 0 . 00 P o 4. 00 .1 0 1 0 P o 4 0 . 00 .2 0 ±0 ±0 ±0 ±0 ±0 ±0 包装形式 Packaging Style REEL DIMENSIONS 数量Quantity:5000pieces per 7 reel Data
Sheet SMD CERAMIC ANTENNA TECHNOLOGY

Page 1 of 41 Report No.: UNIA23032709ER-61 FCC RADIO TEST REPORT FCC ID: 2BAO8RSR1 Sample： Open Ear Headphones Trade Name： RockShi ne Main Model： RockShi ne R1 Additional Model： N/A Report No.： UNIA23032709ER-61 Prepared for Shenzhen Changying Technology Co., Ltd. F502, Mingyue Huadu, Gonghe Industrial Road, Gongle Community, Xixiang, Bao'an, Shenzhen Prepared by Shenzhen United Testing Technology Co., Ltd. 2F, Annex Bldg, Jiahuangyuan Tech Park, #365 Baotian 1 Rd, Tiegang C ommuni ty, Xi xi ang Str, Bao'an D i stri ct, Shenzhen, C hi na Page 2 of 41 Report No.: UNIA23032709ER-61 TEST RESULT CERT IFICAT ION Applicant.............................. Shenzhen Changying Technology Co., Ltd. Address ................................. F502, Mingyue Huadu, Gonghe Industrial Road, Gongle Community, Xixiang, Bao'an, Shenzhen Manufacturer ....................... Shenzhen Changying Technology Co., Ltd. Address ................................. F502, Mingyue Huadu, Gonghe Industrial Road, Gongle Community, Xixiang, Bao'an, Shenzhen Product description Product.................................. Open Ear Headphones Trade Name .......................... RockShine Model Name.......................... RockShine R1 Test Methods ....................... FCC Rules and Regulations Part 15 Subpart C Section 15.249, ANSI C63.10: 2013 This device described above has been tested by Shenzhen United Testing Technology Co., Ltd., and the test results show that the equipment under test (EUT) is in compliance wi th the FCC requirements. And it is applicable only to the tested sample identified i n the report. This report shall not be reproduced except in full, without the written approval of UNI, this document may be altered or revised by Shenzhen United Testing Technology Co., Ltd., personnel only, and shall be noted in the revision of the document. Date of Test .......................................... Date (s) of performance of tests ............ Mar. 27, 2023 ~ Mar. 30, 2023 Date of Issue .......................................... Mar. 30, 2023 Test Result ............................................. Pass Prepared by: Jason Ye/Supervisor Reviewer: Kelly Cheng/Supervisor Approved & Authorized Signer: Liuze/Manager Page 3 of 41 Report No.: UNIA23032709ER-61 Table of Contents Pages 1 TEST SUMMARY 4 1.1 TEST PROCEDURES AND RESULTS 4 1.2 TEST FAC IL IT Y 5 1.3 MEASUREME NT UNCERTAINTY 6 1.4 ENVIRONMENTAL CONDITIONS 6 2 GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF EUT 7 2.2 CARRIER FREQUENCY OF CHANNELS 8 2.3 TEST MODE 8 2.4 TEST SETUP 9 2.5 EQUIP ME NT USED IN TESTED SYSTEM 9 2.6 MEASUREMENT INSTRUMENTS LIST 10 3 CONDUCTED EMISSION 11 3.1 TEST LIMIT 11 3.2 TEST SETUP 11 3.3 TEST PROCEDURE 12 3.4 TEST RESULT 12 4 RADIATED EMISSION 15 4.1 TEST LIMIT 15 4.2 TEST SETUP 16 4.3 TEST PROCEDURE 17 4.4 TEST RESULT 17 5 BAND EDGE 29 5.1 TEST LIMIT 29 5.2 TEST PROCEDURE 29 5.3 TEST RESULT 29 6 OCCUPIED BA ND W ID TH 32 6.1 TEST SETUP 32 6.2 TEST PROCEDURE 32 6.3 TEST RESULT 32 7 ANTE NNA REQUIREMENT 39 8 PHOTO OF TEST 40 8.1 R AD IATED E MISSIO N 40 8.2 CONDUCTED EMISSION 41 Page 4 of 41 Report No.: UNIA23032709ER-61 1 TEST SUMMARY 1.1 TEST PROCEDURES AND RESULTS Note: “N/A” denotes test is not applicable in this Test Report. Item FCC Rules Description Of Test Result 1 FCC Part 15.207 Conducted Emission Pass 2 FCC Part 15.209/15.249 Radiated Emission Pass 3 FCC Part 15.249/15.205 Band Edge Pass 4 FCC Part 15.215 Occupied Bandwidth Pass 5 FCC Part 15.203 Antenna Requirement Pass Page 5 of 41 Report No.: UNIA23032709ER-61 1.2 TEST FACILITY Test Firm : Shenzhen United Testing Technology Co., Ltd. Address : 2F, Annex Bldg, Jiahuangyuan Tech Park, #365 Baotian 1 Rd,Tiegang Community, Xixiang Str, Bao'an District, Shenzhen, China The testing quality ability of our laboratory meet with "Quality Law of People's Republic of China" Clause 19.The testing quality system of our laboratory meets with ISO/IEC-17025 requirements. This approval result is accepted by MRA of APLAC. Our test facility is recognized, certified, or accredited by the following organizations: A2LA Certificate Number: 4747.01 The EMC Laboratory has been accredited by A2LA, and in compliance with ISO/IEC 17025:2017 General Requirements for testing Laboratories. FCC Registration Number: 0027159896 The EMC Laboratory has been registered and fully described in a report filed with the (FCC) Federal Communications commission. IC Registration Number: 21947 The EMC Laboratory has been registered and fully described in a report filed with the (IC) Industry Canada. Page 6 of 41 Report No.: UNIA23032709ER-61 1.3 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. A. Conducted Measurement: Test Site Method Measurement Frequency Range U, (dB) NOTE UNI ANSI 9kHz ~ 150kHz 2.96 150kHz ~ 30MHz 2.44 B. Radiated Measurement: Test Site Method Measurement Frequency Range U, (dB) NOTE UNI ANSI 9kHz ~ 30MHz 2.50 30MHz ~ 1000MHz 4.80 Above 1000MHz 4.13 C. RF Conducted Method: Item Measurement Uncertainty Uncertainty of total RF power, conducted U c = ±0.8 dB Uncertainty of RF power density, conducted U c = ±2.6 dB Uncertainty of spurious emissions, conducted U c = ±2 % Uncertainty of Occupied Channel Bandwidth U c = ±2 % 1.4 ENVIRONMENTAL CONDITIONS During the measurement the environmental conditions were within the listed ranges: Temperature: 15~35 °C Relative Humidity: 30~60 % Air Pressure: 950~1050 hPa Page 7 of 41 Report No.: UNIA23032709ER-61 2 GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF EUT Product: Open Ear Headphones Trade Name: RockShine Main Model: RockShine R1 Additional Model: N/A Model Difference: N/A FCC ID: 2BAO8RSR1 Operation Frequency: 2402MHz~2480MHz Number of Channels: 79CH Modulation Type: GFSK, π/4 DQPSK, 8DPSK Antenna Type: Chip Antenna Antenna Gain: 2.58dBi Battery: DC 3.7V, 180mAh Adapter: N…

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Model: RockShine R1 Radiated Emission test Model: RockShine R1 Conducted Emission test