2BX56-D93Bluetooth Earphone

FCC Warnning: 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 0cm between the radiator and your body.

shanghaiqishidianzikejiyouxiangongsi Add: Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Date: 2026-9-14 FCC ID: 2BX56-D93 Dear Sir/Madam, We, shanghaiqishidianzikejiyouxiangongsi Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of left&right earphones are the same, but the locations of components are different: Product name: Bluetooth Earphone Model no.: D93 Refer to the follow photos: Left Right shanghaiqishidianzikejiyouxiangongsi Add: Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Sincerely, Name/Title： Zhen Xu/Manager Company: shanghaiqishidianzikejiyouxiangongsi Address: Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Phone: 13603034005 Fax: E-Mail: [email protected]

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 7 Product Name: Bluetooth Earphone Model No.: D93 EUT Constructional Details External Photo Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 7 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 7 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 7 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 5 of 7 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 6 of 7 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 7 of 7 ------End------

Label and Location Size: L: 1.0cm*W: 0.2cm Label and Location FCC ID : 2BX56-D93

Shenzhen HTT Technology Co., Ltd. Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 6 Product Name: Bluetooth Earphone Model No.: D93 Internal Photos of the EUT Left side Photo Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 6 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 3 of 6 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 4 of 6 Right side Photo Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 5 of 6 Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 6 of 6 ------End------

Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 1 of 9 RF Exposure evaluation Report Reference No. ..................... : FCC ID............................................. : HTT202608610F02 2BX56-D93 Compiled by ( position+printed name+signature) . : File administrators Heber He Supervised by ( position+printed name+signature) . : Project Engineer Bruce Zhu Approved by ( position+printed name+signature) . : RF Manager Kevin Yang Date of issue .................................... : Sep. 3, 2026 Testing Laboratory Name .............. : Shenzhen HTT Technology Co.,Ltd. Address ............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ............................ : shanghaiqishidianzikejiyouxiangongsi Address ............................................ : Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Standard ........................................... : 47CFR §1.1310 47CFR §2.1093 KDB447498 D01 General RF Exposure Guidance v06 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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. Test item description ..................... : Bluetooth Earphone Manufacturer .................................... : Hangzhou Yinshang Intelligent Technology Co., Ltd. Trade Mark ........................................ DMOOSTER Model/Type reference ...................... : D93 Rating ............................................... : Headphone battery capacity:3.7V/30mAh (polymer battery) Charging bin battery capacity:3.7V/250mAh (polymer battery) Charging interface :USB Type-C Result ............................................... : PASS Report No.: HTT202608610F02 Page 2 of 9 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 2 of 9 T E S T R E P O R T Equipment under Test : Bluetooth Earphone Model /Type : D93 Listed Models : N/A Applicant : shanghaiqishidianzikejiyouxiangongsi Address : Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Manufacturer : Hangzhou Yinshang Intelligent Technology Co., Ltd. Address : Room E2051, 2nd Floor, Building 1 (South), No. 368 Liuhe Road, Puyan Street, Binjiang District, Hangzhou City, Zhejiang Province, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: HTT202608610F02 Page 3 of 9 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 3 of 9 Contents 1 T E S T S T A N D A R D S ................................................... 4 2 S U M M A R Y .............................................................. 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Special Accessories 5 2.4 Modifications 5 3 T E S T E N V I R O N M E N T 6 3.1 Address of the test laboratory 6 3.2 Test Facility 6 3.3 Statement of the measurement uncertainty 6 4 T E S T L I M I T 7 4.1 Requirement 7 4.2 Conducted Power Results 8 4.3 Manufacturing tolerance 8 4.4 Evaluation Result 9 4.5 Simultaneous Transmission for SAR Exclusion 9 5 C O N C L U S I O N 9 Report No.: HTT202608610F02 Page 4 of 9 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 4 of 9 1 T E S T S T A N D A R D S The tests were performed according to following standards: ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Device, RF Exposure, Equipment Authorization Procedures. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1093: Radiofrequency radiation exposure evaluation: portable devices Report No.: HTT202608610F02 Page 5 of 9 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Page 5 of 9 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Aug. 19, 2026 Testing commenced on : Aug. 19, 2026 Testing concluded on : Sep. 3, 2026 2.2 Product Description Product description: Bluetooth Earphone Model/Type reference: D93 Power supply: Headphone battery capacity:3.7V/30mAh (polymer battery) Charging bin battery capacity:3.7V/250mAh (polymer battery) Charging interface :USB Type-C Adapter Information (Auxiliary test provided by the lab): Model: GS-0500200 Input: AC100-240V, 50/60Hz, 0.3A max Output: DC 5V, 2A Testing sample ID： HTT202608610-1# (Engineer sample) HTT202608610-2# (Normal sample) Hardware version: / Software version: / Bluetooth : Supported Type: Bluetooth BR/EDR Modulation: G…

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2.4GHz 1608 Chip Antenna: YC0603NBU9 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation 0603 YC (A) (B) N (C) B (D) U (E) ElectricalSpecificatio 9 (F) n ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 1.6x0.8mm( ± 0.1mm) (C)MaterialHighKmaterial (D)Frequency2.4~ 2 . 5 GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=9 WorkingFrequencyRange2400 ~2500 MHz Bandwidth120MHz(Min.) PeakGain2.7dBi (Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) Dimension(mm) L 1.60±0.10 W 0.80±0.10 T 0.80±0.10 咏成國際科技有限公司電話 :13530576606 RAINInternationalTechnologyCo.,Ltd. TEL:13530576606 7/F,BuildingF,ZhichuangPark,Tong'an,Gushu,Shenzhen 2.4GHz 1608 Chip Antenna:YC0603NBU9 _ 1 EvaluationBoardReference 设计指导： 1、原则上，净空区左侧边缘距离板边的间距L1应该尽量大，且 注意与底部电池的间距。 2、净空区的宽度W最优为1.5mm~2mm。 3、净空区的长度L2的长度为2mm~4mm。 2.4GHz 1608 Chip Antenna:YC0603NBU9 _ ElectricalCharacteristics ReturnLoss&Radiation ELECTRICALCHARACTERISTICSS11 _ 2.4GHz 1608 Chip Antenna:YC0603NBU9 Radiation Pattern 2.4GHz 1608 Chip Antenna:YC0603NBU9 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZABCD 16087” 4.0±0. E 5K/Reel 5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType 1.90±0.2 0603 03.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 _ 2.4GHz 1608 Chip Antenna:YC0603NBU9 Reliability Table TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz 3216 Chip Antenna:YC0603NBU9 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 1NewDatashee2025/06/02t 2Add2Dradiationcharacteristi2026/10/01c

1 Appendix RF Test Data for BT Company: : shanghaiqishidianzikejiyouxiangongsi EUT : Bluetooth Earphone FCC ID: : 2BX56-D93 Model Number : D93 Report No. : HTT202608610F01 Reviewed By : Heber He 2 1. Duty Cycle 1.1 Test Result 1.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) GFSK SISO 2402 DH5 2.911 3.750 77.63 1.10 0.03 2441 DH5 2.911 3.749 77.65 1.10 0.01 2480 DH5 2.910 3.749 77.62 1.10 0.03 Pi/4DQPSK SISO 2402 2DH5 2.917 3.750 77.79 1.09 0.03 2441 2DH5 2.917 3.751 77.77 1.09 0.03 2480 2DH5 2.917 3.751 77.77 1.09 0.04 8DPSK SISO 2402 3DH5 2.918 3.750 77.81 1.09 0.04 2441 3DH5 2.918 3.750 77.81 1.09 0.03 2480 3DH5 2.919 3.751 77.82 1.09 0.03 3 1.2 Test Graph 1.2.1 Ant1 GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV 4 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV 5 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV 6 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV 7 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV 8 2. Bandwidth 2.1 Test Result 2.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.830 / Pass 2441 DH5 1 0.824 / Pass 2480 DH5 1 0.821 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.172 / Pass 2441 2DH5 1 1.167 / Pass 2480 2DH5 1 1.168 / Pass 8DPSK SISO 2402 3DH5 1 1.170 / Pass 2441 3DH5 1 1.168 / Pass 2480 3DH5 1 1.173 / Pass 2.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.884 / Pass 2441 DH5 1 0.884 / Pass 2480 DH5 1 0.883 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.311 / Pass 2441 2DH5 1 1.315 / Pass 2480 2DH5 1 1.318 / Pass 8DPSK SISO 2402 3DH5 1 1.296 / Pass 2441 3DH5 1 1.274 / Pass 2480 3DH5 1 1.277 / Pass 9 2.2 Test Graph 2.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV 10 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV 11 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV 12 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV 13 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV 14 2.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV 15 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV 16 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV 17 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV 18 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV 19 3. Maximum Conducted Output Power 3.1 Test Result 3.1.1 Power Left: Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 1.03 <=30 Pass 2441 DH5 3.49 <=30 Pass 2480 DH5 4.54 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 1.44 <=20.97 Pass 2441 2DH5 3.80 <=20.97 Pass 2480 2DH5 4.98 <=20.97 Pass 8DPSK SISO 2402 3DH5 1.88 <=20.97 Pass 2441 3DH5 4.30 <=20.97 Pass 2480 3DH5 5.42 <=20.97 Pass Right: Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 1.24 <=30 Pass 2441 DH5 3.01 <=30 Pass 2480 DH5 4.12 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 1.59 <=20.97 Pass 2441 2DH5 3.34 <=20.97 Pass 2480 2DH5 4.29 <=20.97 Pass 8DPSK SISO 2402 3DH5 1.46 <=20.97 Pass 2441 3DH5 4.02 <=20.97 Pass 2480 3DH5 4.89 <=20.97 Pass 20 4. Carrier Frequency Separation 4.1 Test Result 4.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.008 0.884 >=0.884 Pass Pi/4DQPSK SISO HOPP 2DH5 1.030 1.318 >=0.879 Pass 8DPSK SISO HOPP 3DH5 1.003 1.296 >=0.864 Pass 21 4.2 Test Graph 4.2.1 Ant1 GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV 22 8DPSK_3DH5_HOPP_Ant1_NTNV 23 5. Number of Hopping Frequencies 5.1 Test Result 5.1.1 HoppNum Mode TX Type Frequency (MHz) Packet Type Num of Hopping Frequencies Verdict ANT1 Limit GFSK SISO HOPP DH5 79 >=15 Pass Pi/4DQPSK SISO HOPP 2DH5 79 >=15 Pass 8DPSK SISO HOPP 3DH5 79 >=15 Pass 24 5.2 Test Graph 5.2.1 HoppNum GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV 25 8DPSK_3DH5_HOPP_Ant1_NTNV 26 6. Time of Occupancy (Dwell Time) 6.1 Test Result 6.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Duration of Single Pulse (ms) Observation Period (s) Num of Pulse in Observation Period Dwell Time (ms) Limit (ms) Verdict GFSK SISO HOPP DH1 0.408 31.600 320 130.560 <=400 Pass DH3 1.664 31.600 159 264.576 <=400 Pass DH5 2.916 31.600 104 303.264 <=400 Pass Pi/4DQPSK SISO HOPP 2DH1 0.416 31.600 320 133.120 <=400 Pass 2DH3 1.672 31.600 168 280.896 <=400 Pass 2DH5 2.920 31.600 99 289.080 <=400 Pass 8DPSK SISO HOPP 3DH1 0.414 31.600 320 132.480 <=400 Pass 3DH3 1.666 31.600 165 274.890 <=400 Pass 3DH5 2.922 31.600 103 300.966 <=400 Pass 27 6.2 Test Graph 6.2.1 Ant1 GFSK_DH1_HOPP_Ant1_NTNV GFSK_DH1_HOPP_Ant1_NTNV 28 GFSK_DH3_HOPP_Ant1_NTNV GFSK_DH3_HOPP_Ant1_NTNV 29 GFSK_DH5_HOPP_Ant1_NTNV GFSK_DH5_HOPP_Ant1_NTNV 30 Pi/4DQPSK_2DH1_HOPP_Ant1_NTNV Pi/4DQPSK_2DH1_HOPP_Ant1_NTNV 31 Pi/4DQPSK_2DH3_HOPP_Ant1_NTNV Pi/4DQPSK_2DH3_HOPP_Ant1_NTNV 32 Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV 33 8DPSK_3DH1_HOPP_Ant1_NTNV 8DPSK_3DH1_HOPP_Ant1_NTNV 34 8DPSK_3DH3_HOPP_Ant1_NTNV 8DPSK_3DH3_HOPP_Ant1_NTNV 35 8DPSK_3DH5_HOPP_Ant1_NTNV 8DPSK_3DH5_HOPP_Ant1_NTNV 36 7. Unwanted Emissions In Non-restricted Frequency Bands 7.1 Test Result 7.1.1 Ref Mode TX Type Frequency (MHz) Packet Type ANT Level of Reference (dBm) GFSK SISO 2402 DH5 1 0.62 2441 DH5 1 3.21 2480 DH5 1 4.34 HOPP DH5 1 4.00 4.00 Pi/4DQPSK SISO 2402 2DH5 1 0.59 2441 2DH5 1 2.46 2480 2DH5 1 4.15 HOPP 2DH5 1 3.82 3.82 8DPSK SISO 2402 3DH5 1 0.72 2441 3DH5 1 3.17 2480 3DH5 1 4.31 HOPP 3DH5 1 3.98 3.98 7.1.2 CSE Mode TX Type Frequency (MHz) Packet Type ANT Level of Reference (dBm) Limit (dBm) Verdict GFSK SISO 2402 DH5 1 0.62 -19.38 Pass 2441 DH5 1 3.21 -16.79 Pass 2480 DH5 1 4.34 -15.66 Pass HOPP DH5 1 4.00 -16.00 Pass 4.00 -16.00 Pass Pi/4DQPSK SISO 2402 2DH…

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Shenzhen HTT Technology Co., Ltd. Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. .................... : FCC ID. ........................................... : HTT202608610F01 2BX56-D93 Compiled by ( position+printed name+signature) . : File administrators Heber He Supervised by ( position+printed name+signature) . : Project Engineer Bruce Zhu Approved by ( position+printed name+signature) . : RF Manager Kevin Yang Date of issue .................................... : Sep. 3, 2026 Testing Laboratory Name .............. : Shenzhen HTT Technology Co.,Ltd. Address ............................................ : 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao’an District, Shenzhen, Guangdong, China Applicant’s name ........................... : shanghaiqishidianzikejiyouxiangongsi Address ............................................ : Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Test specification ........................... : Standard ........................................... : FCC Part 15.247 Shenzhen HTT Technology Co.,Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HTT Technology Co.,Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HTT 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. Test item description ..................... : Bluetooth Earphone Trade Mark ....................................... : DMOOSTER Manufacturer .................................. : Hangzhou Yinshang Intelligent Technology Co., Ltd. Model/Type reference ...................... : D93 Listed Models ................................... : N/A Modulation ....................................... : GFSK, Π/4DQPSK, 8DPSK Frequency ......................................... From 2402MHz to 2480MHz Ratings ............................................. : Headphone battery capacity:3.7V/30mAh (polymer battery) Charging bin battery capacity:3.7V/250mAh (polymer battery) Charging interface :USB Type-C Result ............................................... : PASS Report No.: HTT202608610F01 Page 2 of 44 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China T E S T R E P O R T Equipment under Test : Bluetooth Earphone Model /Type : D93 Listed Models : N/A Applicant : shanghaiqishidianzikejiyouxiangongsi Address : Room 207, No. 2191, Lane 99, Jingshang Road, Fengjing Town, Jinshan District, Shanghai City, China Manufacturer : Hangzhou Yinshang Intelligent Technology Co., Ltd. Address : Room E2051, 2nd Floor, Building 1 (South), No. 368 Liuhe Road, Puyan Street, Binjiang District, Hangzhou City, Zhejiang Province, China Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: HTT202608610F01 Page 3 of 44 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park, Hangcheng Road,Nanchang Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Contents 1 TEST STANDARDS .......................................................................................................................................... 4 2 SUMMARY ........................................................................................................................................................ 5 2.1 General Remarks .................................................................................................................................... 5 2.2 Product Description ................................................................................................................................. 5 2.3 Equipment Under Test ............................................................................................................................ 5 2.4 Short description of the Equipment under Test (EUT) ............................................................................ 5 2.5 EUT configuration .................................................................................................................................... 6 2.6 EUT operation mode ............................................................................................................................... 6 2.7 Block Diagram of Test Setup .................................................................................................................. 6 2.8 Related Submittal(s) / Grant (s) .............................................................................................................. 6 2.9 Modifications ........................................................................................................................................... 6 3 TEST ENVIRONMENT ...................................................................................................................................... 7 3.1 Address of the test laboratory ................................................................................................................. 7 3.2 Test Facility ............................................................................................................................................. 7 3.3 Environmental conditions .................…

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Shenzhen HTT Technology Co., Ltd. Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 1 of 2 Product Name: Bluetooth Earphone Model No.: D93 Test Setup Photo Radiated Emission Report No.: HTT202608610 Shenzhen HTT Technology Co.,Ltd. Tel: 0755-23595200 Fax: 0755-23595201 1F, Building B, Huafeng International Robotics Industrial Park,Hangcheng Road, Nanchang Community, Xixiang Street, Bao'an District, Guangdong Province, Shenzhen, China Page 2 of 2 Conducted Emission RF Test ------End------