2AXYZ-MININI-RMCBluetooth microphone speaker

Royche Co.,Ltd Declaration on model difference We the undersigned hereby confirm that these models are identical, and all models have the same RF module and antenna, PCB layout , schematics and component. the difference is the model Numbers and color of appearance. Production name FCC ID Trademark Model no. Bluetooth microphone speaker 2AXYZ-MININI-RMC ROYCHE BT21-RMC-4E-CM, BT21-RMC-4E-TT, BT21-RMC-4E-KY, BT21-RMC-4E-CK, BT21-RMC-4E-SK, BT21-RMC-4E-MG, BT21-RMC-4E-RJ Sincerely, Young Gyu Jang Product Development Manager Royche Co.,Ltd 11F Parkland Bldg., 601, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea.

Royche Co.,Ltd 2022-06-10 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (EUT Name: Bluetooth microphone speaker/Model: BT21-RMC-4E-CM, BT21-RMC-4E-TT, BT21-RMC-4E-KY, BT21- RMC-4E-CK, BT21-RMC-4E-SK, BT21-RMC-4E-MG, BT21-RMC-4E-RJ /FCC ID: 2AXYZ-MININI-RMC) 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 (Block Diagram ,Operational Description,Schematics) required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Young Gyu Jang Product Development Manager Royche Co.,Ltd 11F Parkland Bldg., 601, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea.

Royche Co.,Ltd 2022-06-10 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize DongGuan Anci Electronic Technology 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, Young Gyu Jang Product Development Manager Royche Co.,Ltd 11F Parkland Bldg., 601, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea.

I BT21 MININI BLUETCDTH MIC _ Rating Lab巳I I Material: 凶E团 Size : 4Dx13[mm] Example Bottom 牡巴，古十巴-!::;.E团吾诅旮引臾包埔困号 省丑 包 士H-卦01巨／哺早干丕才旦0闪？护ii LH早卦01巨包埔困号 Color : White 詈 冒 ｀ 庐 胃 Color : GRAY 5C BT21 MININI BLUETOOTH MIC _ Rating Label COLOR ( 1:1 SIZE X ] 1朴咎昔旮引导Al ( LH早干丕才色旦01才1对性） CHIMMY KDYA SHCCKY 。 。 。 ＿ ＿ ＿ Solid coated 「 Solid coated II MAIN BODY COLOR r PANTONE 7402C PANTONE 2707C : PANTONE GRAY SC CDDKV TATA RJ 1朴咎吾旮2.i电召／ 召2.i日I�号创吾2哨 。 －巷叫芒号卦卫． 。 LH早干丕才包旦01才I哨性刮人1 召世早国三肖L四． ＿ ＿ ＼ ＿ Solid coated L Solid coated 口MAINBODY COLOR: PANTONE WHITE PANTONE 531C PANTONE 2281C SILK PRINT: PANTONE GRAY SC 詈 MANG 。 ＿ Solid coated PANTONE 182C label location

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RF EXPOSURE EVALUATION EUT Specification EUT Bluetooth microphone speaker Model Number BT21-RMC-4E-CM, BT21-RMC-4E-TT, BT21-RMC-4E-KY, BT21-RMC-4E-CK, BT21-RMC-4E-SK, BT21-RMC-4E-MG, BT21-RMC-4E-RJ FCC ID 2AXYZ-MININI-RMC Antenna gain (Max) -0.58dBi Operation Frequency 2402-2480MHz Input Rating DC 5V Classification Per Stipulated Test Standard §15.247(i), §2.1093 Modulation GFSK, π/4-DQPSK Max. output power 3.9dBm(0.0025W) Test Requirement: According to §15.247(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Routine SAR evaluation refers to that specifically required by §2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to quality for TCB approval. One antenna is available for the EUT. The minimum separation distance is 5mm. BT DSS: According to KDB 447498, no stand-alone required for BT antenna, and no simultaneous SAR measurement is required. Signature: Tiger Xu Date: 2022-06-10 Transmit Frequency (MHz) Mode Measured Power (dBm) Tune up Power (dBm) Max tune up power(dBm) Calculation Result 1-g SAR 2402 GFSK 2.98 3±1 4 0.778639 3 2441 GFSK 3.39 3±1 4 0.784935 3 2480 GFSK 3.48 3±1 4 0.791180 3 2402 Π/4-DQ PSK 3.43 3±1 4 0.778639 3 2441 Π/4-DQ PSK 3.87 4±1 5 0.988043 3 2480 Π/4-DQ PSK 3.90 4±1 5 0.995905 3

Report No.: E01A22050530F00201 1 of 73 DongGuan Anci Electronic Technology Co., Ltd 1-2 Floor, Building A, No.11, Headquarters 2 Road, Songshan Lake Hi-tech Industrial Development Zone, Dongguan City, Guangdong Pr., China. Phone: 86-769- 8507 5888; Fax: 86-769- 8507 5898 E-mail: [email protected] Rev. 1.0 ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT INTENTIONAL RADIATOR CERTIFICATION TO FCC PART 15 SUBPART C REQUIREMENT OF Bluetooth microphone speaker Model No.: BT21-RMC-4E-CM, BT21-RMC-4E-TT, BT21-RMC-4E-KY, BT21-RMC-4E-CK, BT21-RMC-4E-SK, BT21-RMC-4E-MG, BT21-RMC-4E-RJ Trademark: ROYCHE FCC ID: 2AXYZ-MININI-RMC Report No.: E01A22050530F00201 Issue Date: June 10, 2022 Prepared for Royche Co.,Ltd 11F Parkland Bldg., 601, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea. Prepared by Dong Guan Anci Electronic Technology Co., Ltd. 1-2 Floor, Building A, No.11, Headquarters 2 Road, Songshan, Lake Hi-tech Industrial Development Zone, Dongguan City, Guangdong Pr., China. This report shall not be reproduced, except in full, without the written approval of Dong Guan Anci Electronic Technology Co., Ltd. Report No.: E01A22050530F00201 2 of 73 TRF No.: FCC 15.247/A Rev. 1.0 VERIFICATION OF COMPLIANCE Applicant: Royche Co.,Ltd 11F Parkland Bldg., 601, Eonju-ro, Gangnam-gu, Seoul, Republic of Korea Manufacturer: XWG Technology Ltd. C5 Building, Zhonghao Industry Park, Bantian Street, Longgang District, Shenzhen Product Description: Bluetooth microphone speaker Trade Mark: ROYCHE Model Number: BT21-RMC-4E-CM, BT21-RMC-4E-TT, BT21-RMC-4E-KY, BT21-RMC-4E-CK, BT21-RMC-4E-SK, BT21-RMC-4E-MG, BT21-RMC-4E-RJ (All models are identical except for appearance color and model number, We choose model: BT21-RMC-4E-CK to do all tests.) We hereby certify that: The above equipment was tested by Dong Guan Anci Electronic Technology Co., Ltd.The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10-2013 and the energy emitted by the sample EUT tested as described in this report is in compliance with conducted and radiated emission limits of FCC Rules Part 15.247(2022). Date of Test : May 24, 2022 to June 09, 2022 Prepared by : Tomas Yang/Editor Reviewer & Authorized Signer : Tiger Xu/ Supervisor Report No.: E01A22050530F00201 3 of 73 TRF No.: FCC 15.247/A Rev. 1.0 Modified Information Version Summary Revision Date Report No. Ver.1.0 Original Report / E01A22050530F00201 Report No.: E01A22050530F00201 4 of 73 TRF No.: FCC 15.247/A Rev. 1.0 Table of Contents 1. GENERAL INFORMATION ......................................................................................................... 6 1.1 PRODUCT DESCRIPTION ............................................................................................................................. 6 1.2 TEST METHODOLOGY ................................................................................................................................. 6 1.3 TEST FACILITY ............................................................................................................................................. 7 2. SYSTEM TEST CONFIGURATION............................................................................................... 8 2.1EUT CONFIGURATION ................................................................................................................................. 8 2.2 EUT EXERCISE..................................................................................................................................... 8 2.3 TEST PROCEDURE..................................................................................................................................... 8 2.4CONFIGURATION OF TESTED SYSTEM ........................................................................................................ 9 3. SUMMARY OF TEST RESULTS ................................................................................................. 10 4. DESCRIPTION OF TEST MODES .............................................................................................. 11 5. TEST SYSTEM UNCERTAINTY .................................................................................................. 12 6. CONDUCTED EMISSIONS TEST ............................................................................................... 13 6.1MEASUREMENT PROCEDURE: ................................................................................................................... 13 6.2 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ......................................................................... 13 6.3MEASUREMENT EQUIPMENT USED: .......................................................................................................... 13 6.4 MEASUREMENT RESULT: .......................................................................................................................... 13 CONDUCTED MEASUREMENT PHOTOS: ......................................................................................................... 15 6.5 CONDUCTED MEASUREMENT PHOTOS: ................................................................................................... 16 7. RADIATED EMISSION TEST ....................................................................................................... 17 7.1MEASUREMENT PROCEDURE .................................................................................................................... 17 7.2TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .......................................................................... 19 7.3 MEASUREMENT EQUIPMENT USED: ......................................................................................................... 20 7..4 RADIATED EMISSION LIMIT ...................................................................................................................... 21 7.5 MEASUREMENT RESULT .........................................…

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