2A9P5-B10WIRELESS STEREO HEADPHONE

DongguanQiaomaiElectronicsCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date: 2022-12-15 Subject;RequestforConfidentiality FCCID:2A9P5-B10 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely DongguanQiaomaiElectronicsCo.,Ltd. Contactperson:ZefengCai

Dongguan Qiaomai Electronics Co., Ltd. Agent Authorization Company: Dongguan Qiaomai Electronics Co., Ltd. Address: Room 401, Building 1, No. 25, Liuhua Road, Dongcheng Section, Dongguan, Guangdong, China Product Name: WIRELESS STEREO HEADPHONE Model Number(s): B10, B4, B5, B6, B7, B8, B9 Product Description: WIRELESS 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: 2022-12-19 Name: Zefeng Cai Company: Dongguan Qiaomai Electronics Co., Ltd.

Dongguan Qiaomai Electronics Co., Ltd. Dec.19, 2022 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID : 2A9P5-B10 Model Number: B10, B4, B5, B6, B7, B8, B9 To Whom It May Concern: We, The Dongguan Qiaomai Electronics Co., Ltd. hereby declare that the models are identical except the model names and the color of appearance. Except for the different above, no other modification is performed. Sincerely, Signature: Dongguan Qiaomai Electronics Co., Ltd. Contact person: Zefeng Cai

Report No.: AGC15324221201AP02 Page 1 of 3 EXTERNAL PHOTOS TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC15324221201AP02 Page 2 of 3 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC15324221201AP02 Page 3 of 3 LEFT VIEW OF EUT RIGHT VIEW OF EUT ****************************************End of Report****************************************

FCC ID Label Location 5mm&15mm FCC ID: 2A9P5-B10

Report No.: AGC15324221201AP02 Page 1 of 3 INTERNAL PHOTOS PORT VIEW OF EUT (FIGURE 1) OPEN VIEW OF EUT (FIGURE 1) Report No.: AGC15324221201AP02 Page 2 of 3 VIEW OF BATTERY ANTENNA CLOSE-UP PHOTO-1 BT Antenna Report No.: AGC15324221201AP02 Page 3 of 3 INTERNAL VIEW OF EUT (FIGURE 1) INTERNAL VIEW OF EUT (FIGURE 2) ****************************************End of Report****************************************

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description WIRELESS STEREO HEADPHONE Test Model B10 Series Model B4, B5, B6, B7, B8, B9 FCC ID 2A9P5-B10 2. EVALUATION METHOD 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 3. CALCULATION BR/EDR P t =-2.403dBm=0.58mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(0.58mW /5mm) .[√2.441GHz)]=0.18<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. .5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26-0.76-0.58-5.25-2.46-1.86 MAX. Gain 0 .58dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-5.2537-22.1424-12.4294 2450-2.4652-24.5837-10.4702 2500-1.86120-29.5214-9.20432

Page 1 of 58 FCC Test Report Report No.: AGC15324221201FE03 FCC ID : 2A9P5-B10 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : WIRELESS STEREO HEADPHONE BRAND NAME : RORSOU MODEL NAME : B10, B4, B5, B6, B7, B8, B9 APPLICANT : Dongguan Qiaomai Electronics Co., Ltd. DATE OF ISSUE : Dec. 15, 2022 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC15324221201FE03 Page 2 of 58 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Dec. 15, 2022 Valid Initial Release Report No.: AGC15324221201FE03 Page 3 of 58 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH .............................................................................................................. 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ......................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ......................................................... 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................... 8 2.7. TEST METHODOLOGY ............................................................................................................................. 8 2.8. SPECIAL ACCESSORIES ......................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS ................................................................................................................. 8 2.10. ANTENNA REQUIREMENT..................................................................................................................... 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 9 4. DESCRIPTION OF TEST MODES ................................................................................................................. 10 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 11 5.1. CONFIGURATION OF EUT SYSTEM ...................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE ............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 20DB BANDWIDTH ........................................................................................................................................ 18 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 18 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 18 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 19 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 23 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 23 Report No.: AGC15324221201FE03 Page 4 of 58 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 23 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 23 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 23 10. RADIATED EMISSION ................................................................................................................................. 37 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 37 10.2. TEST SETUP ......................................................................................................................................... 39 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 40 10.4. TEST RESULT........................................................................................................................................ 40 11. NUMBER OF HOPPING FREQUENCY ........................................…

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Report No.: AGC15324221201AP01 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC15324221201AP01 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************