2AJYS-A1GTrue Wireless Earbuds

10 cm / 4” 1 2 3 1 2 3 15 min10 sec 15 min 1 ENGLISH 10 cm / 4” 1 2 3 1 2 3 15 min10 sec 15 min 1 1 2 3 3 ! 2 L + R L R 2 FRANÇAIS 1 1 2 3 3 ! 2 L + R L R 3 DEUTSCH 1 1 2 3 3 ! 2 L + R L R 4 ESPAÑOL 1 1 2 3 L + R L R 3 ! 2 5 PORTUGUÊS 1 1 2 3 3 ! 2 L + R L R 6 ITALIANO 1 1 2 3 3 ! 2 L + R L R

7 NEDERLANDS 1 1 2 3 3 ! 2 L + R L R 8 1 1 2 3 3 ! 2 正體中文 L + R L R 9 简体中文 1 1 2 3 3 ! 2 L + R L R 10 日本語 1 1 2 3 3 ! 2 L + R L R 11 12 13

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Happy Plugs AB Kungsgatan 4B Stockholm 11143 Sweden [Apr. 23, 2020] Federal Communications Commission 445 12 th Street SW Washington, DC 20554 Subject: Limited Agency Agreement Happy Plugs AB FCC ID: 2AJYS-A1G To Whom It May Concern: We, Happy Plugs AB hereby authorized Intertek Testing Services to act as our Agent for the purpose of preparing application for FCC ID number (2AJYS-A1G) under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is (2020-04-23). The Limited Agency Agreement expires until further notice, unless sooner terminated or extended by written notice to Intertek Testing Services and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Sincerely, [Signature] Happy Plugs AB Contact person: Rickard Paulsson Title: Supply Manager

Happy Plugs AB Kungsgatan 4B Stockholm 11143 Sweden Apr. 23, 2020 Federal Communication Commission Authorization and Evaluation Division FCC ID: 2AJYS-A1G Re: Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the applicant hereby requests confidential treatment of information applied this application as outlined below: 1: Block Diagram 2: Schematics 3: Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rules 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Happy Plugs AB Contact person: Rickard Paulsson Title: Supply Manager

External Photos Test Model: Air 1 Go TOTAL VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT VIEW OF EUT (Port)

FCC ID and IC Label Location 5mm*15mm FCC ID: 2AJYS-A1G IC: 22014-A1G HVIN: Air 1 Go

Internal Photos Test Model: Air 1 Go left OPEN VIEW OF EUT VIEW OF BATTERY INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 BT Antenna INTERNAL VIEW OF EUT-3 right OPEN VIEW OF EUT VIEW OF BATTERY INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 BT Antenna

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description True Wireless Earbuds Model Name Air 1 Go FCC ID 2AJYS-A1G 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v05 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 P t = -4.693dBm=0.34mW 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=(0.34mW /5mm) .[√2.402GHz)]= 0.11<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Page 1 of 68 FCC Test Report Report No.: AGC01082200304FE03 FCC ID : 2AJYS-A1G APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : True Wireless Earbuds BRAND NAME : Happy Plugs MODEL NAME : Air 1 Go APPLICANT : Happy Plugs AB DATE OF ISSUE : Apr. 21, 2020 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No.: AGC01082200304FE03 Page 2 of 68 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Apr. 21, 2020 Valid Initial Release Report No.: AGC01082200304FE03 Page 3 of 68 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 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.......................................................................................................... 20 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 20 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................ 20 9. CONDUCTED SPURIOUS EMISSION ....................................................................................................... 25 9.1. MEASUREMENT PROCEDURE.......................................................................................................... 27 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................. 27 9.3. MEASUREMENT EQUIPMENT USED ................................................................................................. 27 9.4. LIMITS AND MEASUREMENT RESULT .............................................................................................. 27 Report No.: AGC01082200304FE03 Page 4 of 68 10. RADIATED EMISSION ............................................................................................................................. 35 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 .................................................................................................... 50 11.1. MEASUREMENT PROCEDURE .....................................................................…

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Report No.: AGC01082200304FE03 Page 36 of 68 8DPSK MODULATION IN HIGH CHANNEL Hopping off Hopping on Report No.: AGC01082200304FE03 Page 37 of 68 10. RADIATED EMISSION 10.1. MEASUREMENT PROCEDURE 1. The EUT was placed on the top of the turntable 0.8 or 1.5 meter above ground. The phase center of the receiving antenna mounted on the top of a height-variable antenna tower was placed 3 meters far away from the turntable. 2. Power on the EUT and all the supporting units. The turntable was rotated by 360 degrees to determine the position of the highest radiation. 3. The height of the broadband receiving antenna was varied between one meter and four meters above ground to find the maximum emissions field strength of both horizontal and vertical polarization. 4. For each suspected emissions, the antenna tower was scan (from 1 M to 4 M) and then the turntable was rotated (from 0 degree to 360 degrees) to find the maximum reading. 5. Set the test-receiver system to Peak or CISPR quasi-peak Detect Function with specified bandwidth under Maximum Hold Mode. 6. For emissions above 1GHz, use 1MHz RBW and 3MHz VBW for peak reading. Place the measurement antenna away from each area of the EUT determined to be a source of emissions at the specified measurement distance, while keeping the measurement antenna aimed at the source of emissions at each frequency of significant emissions, with polarization oriented for maximum response. The measurement antenna may have to be higher or lower than the EUT, depending on the radiation pattern of the emission and staying aimed at the emission source for receiving the maximum signal. The final measurement antenna elevation shall be that which maximizes the emissions. The measurement antenna elevation for maximum emissions shall be restricted to a range of heights of from 1 m to 4 m above the ground or reference ground plane. 7. When the radiated emissions limits are expressed in terms of the average value of the emissions, and pulsed operation is employed, the measurement field strength shall be determined by averaging over one complete pulse train, including blanking intervals, as long as the pulse train does not exceed 0.1 seconds. As an alternative (provided the transmitter operates for longer than 0.1 seconds) or in cases where the pulse train exceeds 0.1 seconds, the measured field strength shall be determined from the average absolute voltage during a 0.1 second interval during which the field strength is at its maximum values. 8.If the emissions level of the EUT in peak mode was 3 dB lower than the average limit specified, then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions which do not have 3 dB margin will be repeated one by one using the quasi-peak method for below 1GHz. 9. For testing above 1GHz, the emissions level of the EUT in peak mode was lower than average limit (that means the emissions level in peak mode also complies with the limit in average mode), then testing will be stopped and peak values of EUT will be reported, otherwise, the emissions will be measured in average mode again and reported. 10. In case the emission is lower than 30MHz, loop antenna has to be used for measurement and the recorded data should be QP measured by receiver. High - Low scan is not required in this case. Report No.: AGC01082200304FE03 Page 38 of 68 The following table is the setting of spectrum analyzer and receiver. Spectrum Parameter Setting Start ~Stop Frequency 9KHz~150KHz/RB 200Hz for QP Start ~Stop Frequency 150KHz~30MHz/RB 9KHz for QP Start ~Stop Frequency 30MHz~1000MHz/RB 120KHz for QP Start ~Stop Frequency 1GHz~26.5GHz 1MHz/3MHz for Peak, 1MHz/3MHz for Average Receiver Parameter Setting Start ~Stop Frequency 9KHz~150KHz/RB 200Hz for QP Start ~Stop Frequency 150KHz~30MHz/RB 9KHz for QP Start ~Stop Frequency 30MHz~1000MHz/RB 120KHz for QP Report No.: AGC01082200304FE03 Page 39 of 68 10.2. TEST SETUP Radiated Emission Test-Setup Frequency Below 30MHz RADIATED EMISSION TEST SETUP 30MHz-1000MHz RADIATED EMISSION TEST SETUP ABOVE 1000MHz Report No.: AGC01082200304FE03 Page 40 of 68 10.3. LIMITS AND MEASUREMENT RESULT 15.209 Limit in the below table has to be followed Frequencies (MHz) Field Strength (micorvolts/meter) Measurement Distance (meters) 0.009~0.490 2400/F(KHz) 300 0.490~1.705 24000/F(KHz) 30 1.705~30.0 30 30 30~88 100 3 88~216 150 3 216~960 200 3 Above 960 500 3 Note: All modes were tested For restricted band radiated emission, the test records reported below are the worst result compared to other modes. 10.4. TEST RESULT RADIATED EMISSION BELOW 30MHZ No emission found between lowest internal used/generated frequencies to 30MHz. Report No.: AGC01082200304FE03 Page 41 of 68 RADIATED EMISSION BELOW 1GHZ EUT True Wireless Earbuds Model Name Air 1 Go Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Horizontal RESULT: PASS Report No.: AGC01082200304FE03 Page 42 of 68 EUT True Wireless Earbuds Model Name Air 1 Go Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Vertical RESULT: PASS Note: 1. Factor=Antenna Factor + Cable loss, Margin=Measurement-Limit. 2. All test modes had been pre-tested. The mode 7 is the worst case and recorded in the report. Report No.: AGC01082200304FE03 Page 43 of 68 RADIATED EMISSION ABOVE 1GHZ EUT True Wireless Earbuds Model Name Air 1 Go Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage Normal Voltage Test Mode Mode 7 Antenna Horizontal FrequencyMeter ReadingFactorEmission LevelLimitsMargin (MHz)(dBμV)(dB)(dBμV/m)(dBμV/m)(dB) 4804.00046.750.0846.8374-27.17 peak 4804.00042.310.0842.3954-11.61 AVG 7206.00044.972.2147.1874-26.82 peak 7206.00040.732.2142.9454-11.06 AVG Remark: Factor = Antenna Factor + Cable Loss – Pre-amplifier. Value Type EUT True Wireless Earbuds Model Name Air 1 Go Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage …

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Test Setup Photos Test Model: Air 1 Go RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ CONDUCTED TEST SETUP