2AW9K-T20Wireless Earbuds

Federal Communications Commission (FCC) StatementThis device complies with part 15 of the FCC Rules. Operation is subject to the following twoconditions: (1)This device may not cause harmful interference, and (2)this device must accept any interference received, including interference that may cause undesired operation.Note: 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 ormore 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. Warning: Changes or modifications made to this device not expressly approved by HUMBOLDT TECHNOLOGY (HK) LIMITED may void the FCC authorization to operate this device.Note: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment.RF exposure statement: The transmitter must not be colocated or operated in conjunction with any other antenna or transmitter. This equipment complies with the FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a Minimum distance of 5mm between the radiator and any part of your body.

External Photos of EUT FCC ID：2AW9K-T20

FCCIDLabelInformation Labellocation: FCCID:2AW9K-T20

Internal Photos of EUT FCC ID：2AW9K-T20 Antenna

version01 HUMBOLDTTECHNOLOGY(HK)LIMITED ROOM1327/FHOKINGCOMMERCIALCENTRE2-16FAYUENSTREET,MONGKOK,KL,HONGKONG Tel:0755-86329753Fax:0755-86329753 DeclarationconcerningAntennaSpecification Itisherebydeclaredthattheproduct ModelNo.:T20 FCCID: 2AW9K-T20 fulfillstherequirementinFCCtestrelatingtotheantennatype. ThedevicespecifiedaboveconfirmstotheFCCrecommendationsforChipantennatype(s)described below: ModelNo.ofantenna:Chip Typeofantenna:ChipAntenna Gainoftheantenna:0.5dBi Frequencyrange: 2402-2480MHz Themountingoftheantennaisfixedtotheradiomoduleandnootherantennashouldbeused. Companyname:HUMBOLDTTECHNOLOGY(HK)LIMITED Address:ROOM1327/FHOKINGCOMMERCIALCENTRE2-16FAYUEN STREET,MONGKOK,KL,HONGKONG City:HONGKONG ZIP/Postalcode: Country: Place: Shenzhen Date: 2021-01-21 Signature:

RFExposureevaluation FCCID:2AW9K-T20 Accordingto447498D01GeneralRFExposureGuidancev06The1-gand10-gSARtest exclusionthresholdsfor100MHzto6GHzattestseparationdistances≤50mmare determinedby:[(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison ForBluetoothnotBLE pt=8.11dBm=6.471mWat2480MHz So(6.471mW/5mm)x√2.480GHz=2.0<3 ThenSARevaluationisnotrequired

Appendix for 15.247 Report No.: CTL2011301031-WF 1. Bandwidth 1.1 Test Result Test Mode Frequency (MHz) TX Type ANT No. 20dB Bandwidth Verdict Test Result (MHz) GFSK 2402 SISO 1 0.927 PASS 2441 SISO 1 0.865 PASS 2480 SISO 1 0.927 PASS Pi/4DQPSK 2402 SISO 1 1.247 PASS 2441 SISO 1 1.231 PASS 2480 SISO 1 1.277 PASS 8DPSK 2402 SISO 1 1.309 PASS 2441 SISO 1 1.256 PASS 2480 SISO 1 1.259 PASS Test Mode Frequency (MHz) TX Type ANT No. 99% Occupied Bandwidth Test Result (MHz) GFSK 2402 SISO 1 0.867 Only for Report Use 2441 SISO 1 0.869 Only for Report Use 2480 SISO 1 0.859 Only for Report Use Pi/4DQPSK 2402 SISO 1 1.168 Only for Report Use 2441 SISO 1 1.181 Only for Report Use 2480 SISO 1 1.169 Only for Report Use 8DPSK 2402 SISO 1 1.176 Only for Report Use 2441 SISO 1 1.185 Only for Report Use 2480 SISO 1 1.178 Only for Report Use 1.2 Test Graph - 20dB Bandwidth 1.3 Test Graph - 99% Occupied Bandwidth 2. Maximum Conducted Output Power 2.1 Test Result Test Mode Frequency (MHz) Tx Type Measured Peak Output Power (dBm) Limits (dBm) Verdict Ant 1 GFSK 2402 SISO 6.57 30 PASS 2441 SISO 6.78 30 PASS 2480 SISO 6.79 30 PASS Pi/4DQPSK 2402 SISO 7.58 20.97 PASS 2441 SISO 7.73 20.97 PASS 2480 SISO 7.83 20.97 PASS 8DPSK 2402 SISO 7.88 20.97 PASS 2441 SISO 8.04 20.97 PASS 2480 SISO 8.11 20.97 PASS 2.2 Test Graph 3. Carrier frequency separation 3.1 Test Result Test Mode TX Type ANT No. Channel Separation (MHz) 20dB Bandwidth (MHz) Limits (MHz) Verdict GFSK SISO 1 0.990 0.927 ≥0.927 PASS Pi/4DQPSK SISO 1 0.987 1.277 ≥0.851 PASS 8DPSK SISO 1 0.999 1.309 ≥0.873 PASS 3.2 Test Graph 4. Number of hopping frequencies 4.1 Test Result Test Mode TX Type ANT No. Num of Hopping Frequencies Limits Verdict GFSK SISO 1 79 ≥15 PASS Pi/4DQPS K SISO 1 79 ≥15 PASS 8DPSK SISO 1 79 ≥15 PASS 4.2 Test Graph 5. Time of Occupancy (Dwell Time) 5.1 Test Result Test Mode Packet Type TX Type ANT No. Duration of Single Pulse (ms) Obeser vation Period (s) Num of Pulse in Observation Period Dwell Time (ms) Limits (ms) Verdict GFSK DH1 SISO 1 0.402 31.6 320 128.640 ≤400 PASS DH3 SISO 1 1.634 31.6 160 261.440 ≤400 PASS DH5 SISO 1 2.911 31.6 107 311.477 ≤400 PASS Pi/4D QPS K 2DH1 SISO 1 0.412 31.6 320 131.840 ≤400 PASS 2DH3 SISO 1 1.636 31.6 160 261.760 ≤400 PASS 2DH5 SISO 1 2.747 31.6 106 291.182 ≤400 PASS 8DPS K 3DH1 SISO 1 0.411 31.6 320 131.520 ≤400 PASS 3DH3 SISO 1 1.640 31.6 160 262.400 ≤400 PASS 3DH5 SISO 1 2.917 31.6 106 309.202 ≤400 PASS 5.2 Test Graph 6. Unwanted Emissions in Non-restricted Frequency Bands 6.1 Test Result Test Mode Frequency (MHz) TX Type ANT No. Spurious Conducted Emission (dBm) Limits (dBm) Verdict GFSK 2402 SISO 1 Refer to test graph -13.51 PASS 2441 SISO 1 Refer to test graph -13.51 PASS 2480 SISO 1 Refer to test graph -13.51 PASS Hopping SISO 1 Refer to test graph -13.51 PASS Pi/4DQPSK 2402 SISO 1 Refer to test graph -13.23 PASS 2441 SISO 1 Refer to test graph -13.23 PASS 2480 SISO 1 Refer to test graph -13.23 PASS Hopping SISO 1 Refer to test graph -13.23 PASS 8DPSK 2402 SISO 1 Refer to test graph -13.43 PASS 2441 SISO 1 Refer to test graph -13.43 PASS 2480 SISO 1 Refer to test graph -13.43 PASS Hopping SISO 1 Refer to test graph -13.43 PASS 6.2 Test Graph

Shenzhen CTL Testing Technology Co., Ltd. Tel: +86-755-89486194 E-mail: [email protected] TEST REPORT FCC PART 15.247 Report Reference No.: CTL2011301031-WF Compiled by: ( position+printed name+signature) Happy Guo (File administrators) Tested by: ( position+printed name+signature) Cary Gao (Test Engineer) Approved by: ( position+printed name+signature) Ivan Xie (Manager) Product Name .............................. : Wireless Earbuds Model/Type reference ................. : T20 List Model(s) ................................ : N/A Trade Mark ................................... : LETSCOM, Letsfit, ANBES FCC ID .......................................... : 2AW9K-T20 Applicant’s name ........................ : HUMBOLDT TECHNOLOGY (HK) LIMITED Address of applicant .................. : ROOM 13 27/F HO KING COMMERCIAL CENTRE 2-16 FA YUEN STREET, MONGKOK, KL, HONGKONG Test Firm ...................................... : Shenzhen CTL Testing Technology Co., Ltd. Address of Test Firm .................. : Floor 1-A, Baisha Technology Park, No.3011, Shahexi Road, Nanshan District, Shenzhen, China 518055 Test specification ........................ : Standard ........................................ : FCC Part 15.247: Operation within the bands 902-928 MHz, 2400-2483.5 MHz and 5725-5850 MHz. TRF Originator .............................. : Shenzhen CTL Testing Technology Co., Ltd. Master TRF ................................... : Dated 2011-01 Date of receipt of test item ......... : Dec. 01, 2020 Date of sampling ......................... : Dec. 01, 2020 Date of Test Date ......................... : Dec. 01, 2020-Dec. 09, 2020 Date of Issue ................................ : Jan. 05, 2021 Result ........................................... : Pass Shenzhen CTL Testing 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 CTL Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTL Testing 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. V1.0 Page 2 of 34 Report No.: CTL2011301031-WF TEST REPORT Test Report No. : CTL2011301031-WF Jan. 05, 2021 Date of issue Equipment under Test : Wireless Earbuds Sample No : CTL201130103-1-S001 Model /Type : T20 Listed Models : N/A Applicant : HUMBOLDT TECHNOLOGY (HK) LIMITED Address : ROOM 13 27/F HO KING COMMERCIAL CENTRE 2-16 FA YUEN STREET, MONGKOK, KL, HONGKONG Manufacturer : HUMBOLDT TECHNOLOGY (HK) LIMITED Address : ROOM 13 27/F HO KING COMMERCIAL CENTRE 2-16 FA YUEN STREET, MONGKOK, KL, HONGKONG Test result Pass * *In the configuration tested, the EUT complied with the standards specified page 5. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the issuing testing laboratory. V1.0 Page 3 of 34 Report No.: CTL2011301031-WF ** Modified History ** Revisions Description Issued Data Report No. Remark Version 1.0 Initial Test Report Release 2021-01-05 CTL2011301031-WF Tracy Qi V1.0 Page 4 of 34 Report No.: CTL2011301031-WF Table of Contents Page 1. SUMMARY............................................................................................................................................................ 5 1.1. TEST STANDARDS ..................................................................................................................................................... 5 1.2. TEST DESCRIPTION ........................................................................................................................................................ 5 1.3. TEST FACILITY .............................................................................................................................................................. 6 1.4. STATEMENT OF THE MEASUREMENT UNCERTAINTY ............................................................................................................... 6 2. GENERAL INFORMATION ....................................................................................................................................... 7 2.1. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 7 2.2. GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 7 2.3. DESCRIPTION OF TEST MODES AND TEST FREQUENCY .......................................................................................................... 8 2.4. EQUIPMENTS USED DURING THE TEST .............................................................................................................................. 9 2.5. RELATED SUBMITTAL(S) / GRANT (S) ................................................................................................................................ 9 2.6. MODIFICATIONS ........................................................................................................................................................... 9 3. TEST CONDITIONS AND RESULTS ......................................................................................................................... 10 3.1. CONDUCTED EMISSIONS TEST ....................................................................................................................................... 10 3.2. RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 13 3.3. MAXIMUM PEAK OUTPUT POWER ................................................................................................................................ 19 3.4. 20D…

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Test set-up Procedures FCC ID：2AW9K-T20