OWT-SMK302Bluetooth Stereo Headphone

Arts Digital Technology (HK) Limited Agent Authorization Company: Arts Digital Technology (HK) Limited Address: 1704, 17/F, Fo Tan Industrial Centre 26-28 Au Pui Wan Street, Fo Tan, HK Product Name: Bluetooth Stereo Headphone Model Number(s): SMK302PP, ADT302B, SMK302BG, SMK302XX, ADT30XB (X can be 0-9 or A-Z for different coloration or export country) Product Description: Bluetooth Stereo Headphone 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: Jul.06,2022 Name: Dora Lee Title: Merchandising Manager Company: Arts Digital Technology (HK) Limited

Arts Digital Technology (HK) Limited Family models declaration letter. Date: July 14, 2022 We Arts Digital Technology (HK) Limited Of 1704, 17/F, Fo Tan Industrial Centre 26-28 Au Pui Wan Street,Fo Tan, HK Product: Bluetooth Stereo Headphone Model Name:SMK302PP Serial Model: ADT302B, SMK302BG,SMK302XX,ADT30XB (X can be 0-9 or A-Z for different coloration or export country) Difference description of series models: All the model are the same circuit and RF module, except the model names. Sincerely Date: Jul.06,2022 Signature: Name: Dora Lee Title: Merchandising Manager Company: Arts Digital Technology (HK) Limited

Arts Digital Technology (HK) Limited Date: July 06,2022 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: OWT-SMK302 To Whom It May Concern, Pursuant 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 Procedure 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); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to 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: Dora Lee Title: Merchandising Manager

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181.37 mm 79.25 mm /M / + / - / C:100 M:23 Y:0 K:18 C:0 M:100 Y:0 K:0 C:0 M:30 Y:100 K:0 C:85 M:0 Y:0 K:0 C:60 M:0 Y:100 K:0 KIDS logo Color: CMYK

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FCC ID: OWT-SMK302 RF Exposure Evaluation TEST STANDARDS Follow the maximum permissible exposure (MPE) limits specified in 447498 D04 Interim General Radio Frequency Exposure Guidelines v01. The gain of the antenna used in the product was extracted from the supplied antenna data sheet and the maximum total power input to the antenna was also measured. Calculate the distance from the product to the MPE limit by the formula. LIMIT For single RF sources (i.e., any single fixed RF source, mobile device, or portable device, as defined in paragraph (b)(2) of this section): A single RF source is exempt if: (A) The available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption may not be used in conjunction with other exemption criteria other than those in paragraph (b)(3)(ii)(A) of Part 1.1307. Medical implant devices may only use this exemption and that in paragraph (b)(3)(ii)(A); (B) Or the available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold Pth (mW) described in the following formula. This method shall only be used at separation distances (cm) from 0.5 centimeters to 40 centimeters and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by: (C) Or using below table and the minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. For the exemption in Table 1 to apply, R must be at least λ/2π, where λ is the free-space operating wavelength in meters. If the ERP of a single RF source is not easily obtained, then the available maximum time-averaged power may be used in lieu of ERP if the physical dimensions of the radiating structure(s) do not exceed the electrical length of λ/4 or if the antenna gain is less than that of a half-wave dipole (1.64 linear value). FCC ID: OWT-SMK302 For multiple RF sources: Multiple RF sources are exempt if: (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). This exemption may not be used in conjunction with other exemption criteria other than those is paragraph (b)(3)(i)(A) of Part 1.1307. Medical implant devices may only use this exemption and that in paragraph (b)(3)(i)(A). (B) in the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation. Where: a = number of fixed, mobile, or portable RF sources claiming exemption using paragraph (b)(3)(i)(B) of Part 1.1307 for Pth, including existing exempt transmitters and those being added. b = number of fixed, mobile, or portable RF sources claiming exemption using paragraph (b)(3)(i)(C) of Part 1.1307 for Threshold ERP, including existing exempt transmitters and those being added. c = number of existing fixed, mobile, or portable RF sources with known evaluation for the specified minimum distance including existing evaluated transmitters. Pi = the available maximum time-averaged power or the ERP, whichever is greater, for fixed, mobile, or portable RF source i at a distance between 0.5 cm and 40 cm (inclusive). Pth,i = the exemption threshold power (Pth) according to paragraph (b)(3)(i)(B) of this section for fixed, mobile, or portable RF source i. FCC ID: OWT-SMK302 ERPj = the ERP of fixed, mobile, or portable RF source j. ERPth,j = exemption threshold ERP for fixed, mobile, or portable RF source j, at a distance of at least λ/2π according to the applicable formula of paragraph (b)(3)(i)(C) of Part 1.1307. Evaluatedk = the maximum reported SAR or MPE of fixed, mobile, or portable RF source k either in the device or at the transmitter site from an existing evaluation at the location of exposure. Exposure Limitk = either the general population/uncontrolled maximum permissible exposure (MPE) or specific absorption rate (SAR) limit for each fixed, mobile, or portable RF source k, as applicable from § 1.1310. Test Result of RF Exposure Evaluation Protocol Fre. (GHz) Output power (dBm) Tune-up power (dBm) Max tune-up power (dBm) ANT Gain ( dBi) Max EIRP (dBm) Max EIRP (mW) Separation distance (cm) Limit (mW) Result BT 2.402 -0.98 -1±1 0 -0.58 -0.58 0.87 0.5 2.77 PASS Note: The Maxinum power is less than the limit, complies with the exemption requirements.

Report No.: ET-22060431E This test report is valid for the tested samples only. It cannot be reproduced except in full without prior written consent of Shenzhen ETR Standard Technology Co., Ltd. TEST REPORT Applicant: Arts Digital Technology (HK) Limited Address of Applicant: 1704, 17/F, Fo Tan Industrial Centre 26-28 Au Pui Wan Street, Fo Tan, HK Manufacturer/Factory: Arts Digital Technology (HK) Limited Address of Manufacturer/Factory: 1704, 17/F, Fo Tan Industrial Centre 26-28 Au Pui Wan Street, Fo Tan, HK Product Name: Bluetooth Stereo Headphone Model No.: SMK302PP, ADT302B, SMK302BG, SMK302XX, ADT30XB (X can be 0-9 or A-Z for different coloration or export country) Trade Mark: Kids, iKaraoke FCC ID: OWT-SMK302 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of Test: Jul.01,2022- Jul.05,2022 Date of report issued: Jul.07,2022 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Remark: The results shown in this test report refer only to the sample(s) tested , this test report cannot be reproduced, except in full without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver Prepared By Shenzhen ETR Standard Technology Co., Ltd. Address: No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Compiled by: Reviewed by: Approved by: Project Engineer Project Manager Authorized Signature - Page 2 of 47 - Report No.: ET-22060431E Report Revision History Report No. Description Issue Date ET-22060431E Original Jul.07,2022 - Page 3 of 47 - Report No.: ET-22060431E Tel:(86-755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Contents Page 1 TEST SUMMARY ..................................................................................................................................... 4 2 GENERAL INFORMATION ...................................................................................................................... 5 2.1 GENERAL DESCRIPTION OF EUT ......................................................................................................... 5 2.2 TEST MODE ........................................................................................................................................ 7 2.3 DESCRIPTION OF SUPPORT UNITS ....................................................................................................... 7 2.4 DEVIATION FROM STANDARDS ............................................................................................................. 7 2.5 ABNORMALITIES FROM STANDARD CONDITIONS .................................................................................... 7 2.6 TEST FACILITY .................................................................................................................................... 7 2.7 TEST LOCATION .................................................................................................................................. 7 2.8 ADDITIONAL INSTRUCTIONS ................................................................................................................. 7 3 TEST INSTRUMENTS LIST ..................................................................................................................... 8 4 TEST RESULTS AND MEASUREMENT DATA ...................................................................................... 9 4.1 ANTENNA REQUIREMENT ..................................................................................................................... 9 4.2 CONDUCTED EMISSIONS ................................................................................................................... 10 4.3 CONDUCTED PEAK OUTPUT POWER .................................................................................................. 13 4.4 20DB EMISSION BANDWIDTH ............................................................................................................. 14 4.5 CARRIER FREQUENCIES SEPARATION ................................................................................................ 18 4.6 HOPPING CHANNEL NUMBER ............................................................................................................. 22 4.7 DWELL TIME ..................................................................................................................................... 24 4.8 BAND EDGE ...................................................................................................................................... 29 4.8.1 Conducted Emission Method ..................................................................................................... 29 4.8.2 Radiated Emission Method ........................................................................................................ 33 4.9 SPURIOUS EMISSION ......................................................................................................................... 35 4.9.1 Conducted Emission Method ..................................................................................................... 35 4.9.2 Radiated Emission Method ........................................................................................................ 39 5 TEST SETUP PHOTO ............................................................................................................................ 47 6 EUT CONSTRUCTIONAL DETAILS ..................................................................................................... 47 - Page 4 of 47 - Report No.: ET-22060431E Tel:(86-755) 85259392 Email:[email protected] Web: www.etrlab.cn No.103, No.10, Phase I, Zone 3, Xinxing Industrial Park, Xinhe, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 1 Te…

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ET-22060431 Page 1 of 2 Product Name: Bluetooth Stereo Headphone Test Model No.: SMK302PP Test Setup Photo Radiated Emission ET-22060431 Page 2 of 2 Conducted Emission ------End------