2ACXBEARMUFFBTRBLUETOOTH HEADSET WITH SOUND REPRODUCTION & AUX-IN JACK

Snap-on IncorporatedAddr ess: 2801 80th St., Kenosha Wisconsin. USA RIGTHLEFT Model : EARMUFFBTRFCC ID : 2ACXBEARMUFFBTRIC : 12245A-EARMUFFBTRBatch No. : XXXXMade in China

Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E02 TRF No.: /Page 1 of 6 RF EXPOSURE REPORT Applicant : Snap-on Incorporated Address of Applicant : 2801, 80th St., Kenosha WI 53143, USA Manufacturer : Snap-on Incorporated Address of Manufacturer : 2801, 80th St., Kenosha WI 53143, USA Equipment under Test : BLUETOOTH HEADSET WITH SOUND REPRODUCTION & AUX-IN JACK Model No. : HH-323, EARMUFFBTR FCC ID : 2ACXBEARMUFFBTR Test Standard(s) : KDB447498 D01 General RF Exposure Guidance v06 Report No. : DDT-RE25022807-1E02 Issue Date : 2025/10/24 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E02 TRF No.: /Page 2 of 6 Table of Contents 1.General Test Information..............................................................................................5 1.1.Description of EUT .......................................................................................................5 1.2.Accessories of EUT......................................................................................................5 1.3.Test laboratory .............................................................................................................5 2.RF Exposure evaluation for FCC .................................................................................6 2.1.Assessment procedure.................................................................................................6 2.2.Assess result ................................................................................................................6 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E02 TRF:/Page 3 of 6 $!CeMetaLims!digital$ Test Report Declare Applicant : Snap-on Incorporated Address of Applicant : 2801, 80th St., Kenosha WI 53143, USA Equipment under Test : BLUETOOTH HEADSET WITH SOUND REPRODUCTION & AUX-IN JACK Model No. : HH-323, EARMUFFBTR Manufacturer : Snap-on Incorporated Address of Manufacturer : 2801, 80th St., Kenosha WI 53143, USA Test Standard Used: KDB447498 D01 General RF Exposure Guidance v06 We Declare: The equipment described above is tested by Guangdong Dongdian Testing Service Co., Ltd. and in the configuration tested the equipment complied with the standards specified above. The test results are contained in this test report and Guangdong Dongdian Testing Service Co., Ltd. is assumed of full responsibility for the accuracy and completeness of these tests. Report No.:DDT-RE25022807-1E02 Date of Receipt:2025/03/10Date of Test:2025/03/10~2025/04/16 Note: This report applies to above tested sample only. This report shall not be reproduced in parts without written approval of Guangdong Dongdian Testing Service Co., Ltd. Created: Chen Ziqin Reviewed: Zoe PengApproved: Damon Hu 2025/04/152025/10/232025/10/24 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E02 TRF:/Page 4 of 6 Revision History VersionRevision ContentIssue DateApproved V0Initial issue2025/10/24Damon Hu Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E02 TRF:/Page 5 of 6 1. General Test Information 1.1. Description of EUT EUT Name: BLUETOOTH HEADSET WITH SOUND REPRODUCTION & AUX- IN JACK Model Number:HH-323, EARMUFFBTR Difference of model number: Above models are identical in schematic and structure, only the model number are different, therefore the test performed on the model HH-323 EUT Function Description:Please reference user manual of this device Power Supply:DC 5V by an external adapter or DC 3.7V built-in lithium battery Note: The above EUT information is declared by manufacturer and for more detailed features description please refer to the manufacturer's specifications or User's Manual. 1.2. Accessories of EUT AccessoriesManufacturerModel numberDescription AUX Cable/// 1.3. Test laboratory Guangdong Dongdian Testing Service Co., Ltd. Add.: Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808. Tel.: +86-0769-38826678, http://www.dgddt.com, Email: [email protected]. CNAS Accreditation No. L6451; A2LA Accreditation Number: 3870.01 FCC Designation Number: CN1182, Test Firm Registration Number: 540522 Innovation, Science and Economic Development Canada Site Registration Number: 10288A Conformity Assessment Body identifier: CN0048 VCCI facility registration number: C-20087, T-20088, R-20123, R-20240, G-20118 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E02 TRF:/Page 6 of 6 2. RF Exposure evaluation for FCC 2.1. Assessment procedure 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 The result is rounded to one decimal place for comparison 2.2. Assess result Manufacturing Tolerance: ModeAntenna Frequency [MHz] Target Power Tolerance ±(dBm) 24021.51 24411.01 GFSK (Peak)Ant1 2480-0.51 24022.01 24411.51 π/4DQPSK (Peak) Ant1 24800.51 24022.51 24412.01 8DPSK (Peak)Ant1 24800.51 Estimtion Result: Worse case is as below: [2402 MHz, 3.5 dBm, (2.24 mW) output power] (2.00/5) ·[√2.402(GHz)] = 0.705 < 3.0 for 1-g SAR Then SAR evaluation is not required. -----------------------End Report----------------------

Inverted F Antenna Specificatio Summary Antenna Photo & Length (mm) ITEM ANT SPEC Model Name 2.4G ANT Center Frequency Horizontal Vertical 2400MHz 2400MHz 2500MHz 2400MHz 2400MHz 2500MHz -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Address: 333 Kexing Road, Xiangzhou District, Zhuhai City Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBi) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dBi) Max Min Avg 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 (dBi) Max: 0 Min: -30 Scale: 5/div ANT Test Labs：Attestation of Global Compliance Co., Ltd. Frequency (MHz) Gain(dBi) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432

Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF: RT-4-E-005Page 1 of 94 FCC AND ISED CERTIFICATION TEST REPORT Applicant : Snap-on Incorporated Address of Applicant : 2801, 80th St., Kenosha WI 53143, USA Manufacturer : Snap-on Incorporated Address of Manufacturer : 2801, 80th St., Kenosha WI 53143, USA Equipment under Test : BLUETOOTH HEADSET WITH SOUND REPRODUCTION & AUX-IN JACK FCC Model No. : HH-323, EARMUFFBTR IC Model No. : EARMUFFBTR FCC ID : 2ACXBEARMUFFBTR IC : 12245A-EARMUFFBTR Test Standard(s) : FCC Rules and Regulations Part 15 Subpart C, ANSI C63.10-2020, RSS-247 Issue 4 July 24, 2025, RSS-Gen Issue 5, Apr. 2018, Amendment 2 (February 2021), ANSI C63 10-2020+Cor.1-2023+C63.10a- 2024+Errata to C63.10a-2024 Report No. : DDT-RE25022807-1E01 Issue Date : 2025/12/09 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF: RT-4-E-005Page 2 of 94 Table of Contents 1.Summary of Test Results .............................................................................................7 2.General Test Information..............................................................................................8 2.1.Description of EUT .......................................................................................................8 2.2.Accessories of EUT......................................................................................................9 2.3.Block diagram of EUT configuration for test.................................................................9 2.4.Decision of final test mode ...........................................................................................9 2.5.Deviations of test standard.........................................................................................10 2.6.Test environment conditions ......................................................................................10 2.7.Test laboratory ...........................................................................................................10 2.8.Measurement uncertainty...........................................................................................11 3.Equipment Used During Conductive Test ..................................................................12 4.20 dB Bandwidth ........................................................................................................13 4.1.Block diagram of test setup ........................................................................................13 4.2.Limits ..........................................................................................................................13 4.3.Test procedure ...........................................................................................................13 4.4.Test result...................................................................................................................14 4.5.Test graphs ................................................................................................................15 5.99% Bandwidth ..........................................................................................................18 5.1.Block diagram of test setup ........................................................................................18 5.2.Limits ..........................................................................................................................18 5.3.Test procedure ...........................................................................................................18 5.4.Test result...................................................................................................................19 5.5.Test graphs ................................................................................................................20 6.Maximum Peak Output Power....................................................................................23 6.1.Block diagram of test setup ........................................................................................23 6.2.Limits ..........................................................................................................................23 6.3.Test procedure ...........................................................................................................23 6.4.Test result...................................................................................................................24 6.5.Test graphs ................................................................................................................25 7.Carrier Frequency Separation ....................................................................................28 7.1.Block diagram of test setup ........................................................................................28 7.2.Limits ..........................................................................................................................28 7.3.Test procedure ...........................................................................................................28 7.4.Test result...................................................................................................................29 7.5.Test graphs ................................................................................................................30 8.Dwell Time..................................................................................................................31 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF: RT-4-E-005Page 3 of 94 8.1.Block diagram of test setup ........................................................................................31 8.2.Limits ............................................................................................................…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 51 of 94 DH5_Ant1_2441_30~1000 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 52 of 94 DH5_Ant1_2480_30~1000 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 53 of 94 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 54 of 94 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 2DH5_Ant1_2480_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 55 of 94 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 3DH5_Ant1_2402_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 56 of 94 3DH5_Ant1_2402_30~1000 3DH5_Ant1_2402_1000~26500 3DH5_Ant1_2441_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 57 of 94 3DH5_Ant1_2441_30~1000 3DH5_Ant1_2441_1000~26500 3DH5_Ant1_2480_0~Reference Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 58 of 94 3DH5_Ant1_2480_30~1000 3DH5_Ant1_2480_1000~26500 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 59 of 94 12. Duty cycle 12.1. Block diagram of test setup 12.2. Limit Just for Report. 12.3. Test procedure (1) Connected the EUT’s antenna port to the Spectrum Analyzer by suitable attenuator, The cable loss and attenuator loss have been put into spectrum analyzer as amplitude offset. set the Spectrum Analyzer as below: Centre Frequency: The centre frequency of the middle hopping channel. Resolution BW: 10 MHz. Video BW: 10 MHz. Span: Zero span. Detector: Peak. Trace Mode: Clear Write. Sweep: Video Trigger (2) When the trace is complete, measure the sending time of 1 burst and the duty cycle of 1 burst cycle. (3) Calculate dwell time follow below formula: Duty cycle= Pulse’s on time / Burst cycleAppendix I: Duty Cycle Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 60 of 94 12.4. Test result Test Engineer:Zeng ZhongyaoTest Site:RF Measurement System 3# Ambient Condition: 23.7-26.3°C,35.6-42.1%RH Test Date:2025.03.27-2025.04.10 Test Power Supply: DC 3.3VSample Number:S25022807-001 Test ModeAntenna Frequency [MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor[dB] 24022.893.7676.861.14 24412.893.7577.071.13 DH5Ant1 24802.893.7577.071.13 24022.893.7577.071.13 24412.903.7677.131.13 2DH5Ant1 24802.903.7577.331.12 24022.913.7677.391.11 24412.903.7577.331.12 3DH5Ant1 24802.903.7577.331.12 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 61 of 94 12.5. Test graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 2DH5_Ant1_2402 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 62 of 94 2DH5_Ant1_2441 2DH5_Ant1_2480 3DH5_Ant1_2402 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 63 of 94 3DH5_Ant1_2441 3DH5_Ant1_2480 Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 64 of 94 13. Antenna Requirements 13.1. Limit For intentional device, according to FCC 47 CFR Section 15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. And according to FCC 47 CFR Section 15.247 (b), if transmitting antennas of directional gain greater than 6 dBi are used, the power shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6 dBi. For intentional device, according to RSS-Gen issue 5 section 6.8. The applicant for equipment certification shall provide a list of all antenna types that may be used with the transmitter, where applicable (i.e. for transmitters with detachable antenna), indicating the maximum permissible antenna gain (in dBi) and the required impedance for each antenna. The test report shall demonstrate the compliance of the transmitter with the limit for maximum equivalent isotropically radiated power (e.i.r.p.) specified in the applicable RSS, when the transmitter is equipped with any antenna type, selected from this list. 13.2. Result The antenna used for this product as Antenna information described in section 2.1 of the report, and there is no other antenna than that furnished by the responsible party shall be used with the device. Guangdong Dongdian Testing Service Co., Ltd. Report No.:DDT-RE25022807-1E01 TRF:RT-4-E-005Page 65 of 94 14. Radiated Emission 14.1. Test equipment EquipmentManufacturerModel No.Serial No.Cal Due To Trilog Broadband Antenna SchwarzbeckVULB 9163DDT-ZC020502025/07/11 Broad-Band Horn Antenna SchwarzbeckBBHA 9170DDT-ZC005062027/04/01 RF cable Yuhu Technology JCTB810-NJ-NJ- 9M DDT-ZC025382026/03/28 RF cable Yuhu Technology ZT26S-SMAJ- SMAJ-1M DDT-ZC020372026/03/28 High pass filterMicro-TronicsHPM50108DDT-ZC005602026/03/28 High Pass filterXi'an XingboXBLBQ-GTA67DDT-ZC021792026/03/28 RF CableN/AW24.02 HL-562DDT-ZC040222026/03/28 EMI TEST RECEIVERR&SESU26DDT-ZC019092026/03/28 Micro-Tronics filtersREBESBRM50716DDT-ZC03240/ Hochgewinn- Hornantenne SCHWARZBEC K BBHA 9120 DDDT-ZC021292025/09/18 Pre-amplifierCOM-POWERPAM-840ADDT-ZC016932026/03/28 Micro-Tronics filtersREBESBRM50702DDT-ZC03242/ Active Loop AntennaSchwarzbeckFMZB1519DDT-ZC005242025/09/11 Pre-amplifierCOM-POWERPAM-118ADDT-ZC012932025/08/25 High pass filterMicro-TronicsHPM50102DDT-ZC005612026/03/28 PSA Series Spectrum Analyzer AgilentE4447ADDT-ZC005172026/03/28 RF CableN/AW13.02 AP1-X2DDT-ZC040232026/03/28 RF cable Zhongke Junchuang JCT26S-NJ-NJ- 1.5M DDT-ZC027622026/03/28 Guangdong Dongdian …

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