2AMBA-S43TWS Earbuds

66666 FCC ID: 2AMBA-S43

Dongguan Pinmi Electronic Technology Co., Ltd. Room 201, No. 158, Shatong Road, Dalang Town, Dongguan City, Guangdong, China Agent Authorization Company: Dongguan Pinmi Electronic Technology Co., Ltd. Address: Room 201, No. 158, Shatong Road, Dalang Town, Dongguan City, Guangdong, China Product Name: TWS Earbuds Model Number(s): S43, S42, S42A, S43A, S47, S47A, S50, S52, S53, EZ-2033, A6, EQ5, Q33 Product Description: TWS Earbuds 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: Apr. 28, 2023 Name: Tang Feitao Title: General Manager Company: Dongguan Pinmi Electronic Technology Co., Ltd.

Dongguan Pinmi Electronic Technology Co., Ltd. Room 201, No. 158, Shatong Road, Dalang Town, Dongguan City, Guangdong, China Apr. 28, 2023 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID: 2AMBA-S43 Models: S43, S42, S42A, S43A, S47, S47A, S50, S52, S53, EZ-2033, A6, EQ5, Q33 To Whom It May Concern: We, The Dongguan Pinmi Electronic Technology Co., Ltd. hereby declare that the model : S43 is identical with the model : S42, S42A, S43A, S47, S47A, S50, S52, S53, EZ-2033, A6, EQ5, Q33, except the model name. Except for the different above, no other modification is performed. Sincerely, Dongguan Pinmi Electronic Technology Co., Ltd. Signature: [Tang Feitao, General Manager]

Report No.: AGC01924230402AP03 Page 1 of 4 EXTERNAL PHOTOS ALL VIEW OF EUT TOP VIEW OF EUT Report No.: AGC01924230402AP03 Page 2 of 4 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC01924230402AP03 Page 3 of 4 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC01924230402AP03 Page 4 of 4 RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below:

Report No.: AGC01924230402AP03 Page 1 of 4 INTERNAL PHOTOS OPEN VIEW OF EUT (FIGURE 1) OPEN VIEW OF EUT (FIGURE 2) Report No.: AGC01924230402AP03 Page 2 of 4 BATTERY VIEW OF EUT-1 BATTERY VIEW OF EUT-2 Report No.: AGC01924230402AP03 Page 3 of 4 INTERNAL VIEW OF EUT (FIGURE 1)(Left earbud) INTERNAL VIEW OF EUT (FIGURE 2) BT Antenna Report No.: AGC01924230402AP03 Page 4 of 4 INTERNAL VIEW OF EUT (FIGURE 3) (Right earbud) INTERNAL VIEW OF EUT (FIGURE 4) ****************************************End of Report************************************* BT Antenna

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION FCC ID 2AMBA-S43 Product Description TWS Earbuds Model Name S42, S42A, S43A, S47, S47A, S50, S52, S53, EZ-2033, A6, EQ5, Q33 Frequency Band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Bluetooth: 2402 MHz to 2480 MHz Others (2402 MHz to 2480 MHz) Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Max. Output Power 3.107dBm Antenna Gain 1.95dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Evaluation Result Pass 2. PORTABLE DEVICE EVALUATION METHOD AND LIMIT Following FCC KDB 447498 D01 “General SAR test exclusion guidance” The corresponding SAR Exclusion Threshold condition, listed below: 1) 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)] [if(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 The test exclusions are applicable only when the minimum test separation distance is ≤50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50mm) ( f(MHz)/150)] mW, at 100MHz to 1500 MHz; b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)-10] mW at > 1500 MHz and ≤6 GHz; 3) At frequencies below 100 MHz, the following may be considered for SAR test exclusion. a) The threshold at the corresponding test separation distance at 100 MHz in step 2) is multiplied by [1 + log(100/f(MHz))] for test separation distances > 50 mm and < 200 mm. b) The threshold determined by the equation in a) for 50 mm and 100 MHz is multiplied by 1/2 for test separation distances ≤50 mm. c) SAR measurement procedures are not established below 100 MHz. When SAR test exclusion cannot be applied, a KDB inquiry is required to determine SAR evaluation requirements for any test results to be acceptable. 3. MOBILE DEVICE EVALUATION METHOD AND LIMIT Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since exposures are assumed to occur at distances of 20 cm or more from persons. LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE Frequency Range (MHz) E-field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (Minutes) 0.3 -- 1.34 614 1.63 (100)* 30 1.34 -- 30 824/f 2.19/f (180/f 2 )* 30 30 -- 300 27.5 0.073 0.2 30 300 -- 1500 -- -- f/1500 30 1500 -- 100,000 -- -- 1.0 30 *Note: 1. f= Frequency in MHz * Plane-wave Equivalent Power Density 2. The averaging time for General Population/Uncontrolled exposure to fixed transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091 and 2.1093 on source-based time-averaging requirement for mobile and portable transmitters. S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. MEASUREMENT RESULT Test Mode Channel Frequency (MHz) Max Output power (dBm) Max Output power (mW) Calculation Value (Note 1) Threshold Value GFSK BT_BR 2480 3.107 2.045 0.644 3.0 Note 1: Calculation Value =[(max. power of channel, mW)/(min. test separation distance, mm)] ·[√f(GHz)]. =2.045/5*√2.480 ≤ 3.0 5. CONCLUSION The SAR evaluation is not required.

2.4GHz 2012 Ch ip Antenna: RA NT2012F245C07 Dimens ion (mm) L2.05+-0.15 W1.20+-0.15 T0.85+-0.10 No.Te rmina l Name 1Fe eding/GNG 2GND Applicati on: WLAN, 802.11b/g, Bluetooth, WLAN, etc... Featu res SMD, high reliability, ultra Impact , Omni-direct ional... Pa rt number Info rmati on RANT2012F245C07 (A)(B)(C)(D)(E)(F) (A)Product Ty peChip Antenna (B) Size Code2.0x1.2mm(+-0.2mm) (C) MaterialHigh K material (D) Fr equency2.4 ~ 2.5GHz (E) Fe eding modePIFA & Single Fe eding (F) Antenna typeType=06 El ectr ical Sp ecifi cati on Worki ng Fr equency Range2400 ~2484 MHz Bandwidth84 (Min.) Peak Gain1.95 dBi (Typ.) Impedance50 Ohm Return loss10 dB ( Min) Polariza tionLinear Azimuth BeamwidthOmni-direct ional Operation Temperature( °C )-40 ~85 °C Resi st ance to Soldering Heats 10se c. ( @ 280°C) Te rminationNi / Au (Leadless) The specification is defined on EVB. Dimension and Terminal Confi gurati on RAIN International Te chnology Co., Ltd.TEL: 13530576606 2.4GHz2012ChipAntenna:RANT2012F245C07 EvaluationBoardReference PCBDimensionAntennaLayoutReference Unit:mm ElectricalCharacteristics ReturnLoss ReturnLoss&Radiation 1 Frequency(MHz) S11(dB) 2400-10.77 2450-24.81 2484-10.243 Radiation Z Y X 2400MHz2450MHz2500MHz Efficiency70.56%75.25%71.01% PeakGain1.72dBi1.95dBi1.69dBi Directivity2.26dBi2.69dBi2.11dBi 2.4GHz2012ChipAntenna:RANT2012F245C07 TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 20127”5K/Reel 9.0±0.5 60±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTDP PaperType2012 1.50±0.202.30±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.101.57±0.104.0±0.1 2.4GHz2012ChipAntenna:RANT2012F245C07 ReliabilityTable 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 2.4GHz2012ChipAntenna:RANT2012F245C06 2.4GHz2012ChipAntenna:RANT2012F245C07 _ 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 12020/10/15NewDatasheet

Page 1 of 59 FCC Test Report Report No.: AGC01924230402FE03 FCC ID : 2AMBA-S43 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : TWS Earbuds BRAND NAME : N/A MODEL NAME : S43, S42, S42A, S43A, S47, S47A, S50, S52, S53, EZ-2033, A6, EQ5, Q33 APPLICANT : Dongguan Pinmi Electronic Technology Co., Ltd. DATE OF ISSUE : Apr. 13, 2023 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC01924230402FE03 Page 2 of 59 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Apr. 13, 2023 Valid Initial Release Report No.: AGC01924230402FE03 Page 3 of 59 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 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 Report No.: AGC01924230402FE03 Page 4 of 59 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 40 10.4. TEST RESULT........................................................................................................................................ 40 11. NUMBER OF HOPPING FREQUENCY .......…

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Report No.: AGC01924230402AP02 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC01924230402AP02 Page 2 of 2 RF CONDUCTED TES SETUP ****************************************End of Report*************************************