2ANEUCHE-627True wireless earbuds

CHE-627 User Manual QCC Product picture ① ② ③ ④ ⑤ ⑥ ⑧ ⑨ ⑦ R L R L ① ⑦② C hargi ng case ⑤ ⑥ C hargi ng case cont act s ⑧ USB out put port ⑨ Type-C i nput port ③ Mi crophone ④ Ear cap LED B at t ery Indi cat or Touch C ont rol Panel Earphones C hargi ng C ont act s 1 ① LED indicator display status: • Chargi ng for the chargi ng case First use instructions • Charging (LED digital display flashes indicates battery) Full charged (LED display shows 99), please disconnect charging devices from the charging case. Use the charging cable of the packing box, connecting with the power adaptor to charge. Note: please charge for the case with DC5V/1A charger or Computer USB (Must choose the formal charger certified by formal factory ); as the charging and discharging of the earphones increases, the battery performance will decrease, which is normal for all rechargeable batteries. (Don’t press the contact of the spring pin hard to avoid improper use.) Please remove the protective tape before use. Use the right size which is most comfortable to you and put the earphones into the charging case. ②① LMS R R • • Tip: When using it for the first time (or not using it for a long time), please make sure to charge the earphones and charging box before use. Ch argin g case an d earp h on e ch argin g 2 ② LED indicator display status: • Wearin g S k etch es （ ）L（ ）R R L ②① Chargi ng for earphones • • • Please wear the earphone marked "L" on the left ear and the one marked "R" on the right ear. Make sure the charging case with enough battery power, then put the ear- phones into the charging case, they will enter into the charging mode and the light will be on after about 5s. 1. Auto power on: Take out the earphones from the charging case, the ear- phone will automatically power on. 2. Manual power on: If earphone is power off, and the charging case is not available, please tap earphones touch control for 2-3 seconds in the meantime until the blue lights flash. Put earphones into auditory canal, turn the earphones to a firm and comfortable position. Full charged(the light of charging case goes out), the charging case will power off automatically. Charging (The earphones blue light flash slowly, the charging case display flashes on both sides, and the power is displayed in the middle ） 3 Power on Power off Long pres s 2-3s to pow er onThe earphone flas hes blue light b l u e • • 1) Put the earphones into the charging case , they will enter into charging mode and power off automatically. 4 Tips: Pairin g a.Take two earphones out of the charging case. b.The two earphones will power on and connect to each other automatically. 2) If the charging case is not available, just disconnect the Bluetooth con- nection between your cell phone and earphones, the earphones will power off automatically after 10 minutes. 1. The red & blue lights flash alternatively, waiting for connect with cellphone luetooth. 2. The blue light flashes every 5 seconds, connected with cellphone. 3. While using earphones again, take the L/R earphones out of the charging case and the L/R earphones will power on and connect to each other automatically, also the master earphone will connect to the bluetooth device automatically. (The last connected Bluetooth device. c.Search the Bluetooth name “CHE-627” on the phone and click it to connect ① E arphones pai r connecti on 5 Reset Clear paring: Click left and right earphones 5 times when earphone is in charging mode, and you will see red and blue lights will flash in the same time, then take earphones out of charging case, it will connect to each other automatically. If two earphones cannot be connected to each other or they cannot connect to the mobile phone bluetooth due to mis-operation, you can reset the ear- phones as the following method. ② Si ngl e earphone connecti on a.Take any earphone out of the charging case and the earphone light enters the red & blue flash after A few seconds. b.Search the Bluetooth name “CHE-627” on the phone and click it to connect. Tips: 1. Left and right earphone can be used separately. 2. If you want to use both earphones when the earphone is in single connection mode, just need take the other earphone out of the charging case, the slave earphone will connect to the master earphone automatically. 6 Siri Active: After connect with cellphone, press the touch pad control of left or right earphone for 2 seconds and release to activate/close Siri. (In playing music, it can be activate while pause state) Incoming call prompt/number report: Phone ring tone and sound can be heard from Both earphones. Answer the phone: When calls come in, double-click either of earphones. (Sounds can be heard from both earphones.) Hang up the phone: During the call, double-click either of earphones. Reject a call: When calls come in, double-click the either of earphones for 2 seconds and release. Music play: During playing music, double-click the left earphone for previous track; double-click the right earphone for next track; singleclick the either of earphones for pause or play music. Decrease the volume(+): Long touch the left earphone over 3 seconds to turn the volume down. Increase the volume(-): Long touch the right earphone over 3 seconds to turn the volume up. Click two earphones 5 times, red and blue lights flash once Take the earphone out from charging case double clike two earphones, paring automatically Fu n ction al op eration LR 7 • • • S p ecification Warm Ti ps： B l uet oot h versi on: V5.0 Support profi l e: A2DP/ AVR C P/ HFP/ HSP Transmi ssi on di st ance: 33Feet Frequency range: 2402MHz-2480MHz Dri ver:Ф6MM*2 Hi -Fi Speaker 1. The volume of the earphones is not synchronized with the volume of the phone. If the volume of the earphone cannot reach the desired effect, the volume can be adjusted by the phone. 2. Please use the earphone in reasonable volume and time, otherwise it will damage your hearing if you listen the music for long time in high volume. 3. In the Mono mode,earph…

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Tra Company Ltd 2020-04-02 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2ANEUCHE-627 Product Name: True wireless earbuds Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:  Schematics  Block diagram  Operation description  BOM These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name: Ryo Higashi Title: N/A Company: Tra Company Ltd

Tra Company Ltd 2020-04-02 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act asAgent On our behalf, I appoint Shenzhen Tongce Testing Lab. / 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District,Shenzhen, Guangdong, China(Name of Agent company name andaddress) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonourbehalf,Iack nowledgethatallresponsibilityforcomplyingwiththetermsandconditionsforcertification,stillres ideswith Tra Company Ltd /6-6 Kitahama-higashi Chuo-ku Osaka-shi, Osaka 540-0031, Japan (Applicant Nameandaddress) <Signature> Name: Ryo Higashi Title: N/A Applicant Company: Tra Company Ltd

FCCID: 2ANEUCHE-627 Product: True wireless earbuds Model No.: CHE-627, CHE-625 The device have left and right earphone , left and right earphone are electrically identical . <Signature> Name: Ryo Higashi Title: N/A Company: Tra Company Ltd

Page 1 of 6 Appendix B: Photographs of EUT Product: True wireless earbuds Model: CHE-627 External Photos Page 2 of 6 Page 3 of 6 Page 4 of 6 Page 5 of 6 Page 6 of 6

Label Artwork and Location Model: CHE-627 Label: Size: L*W=9.5*4mm FCC ID: 2ANEUCHE-627 Location

Page 1 of 4 Appendix B: Photographs of EUT Product: True wireless earbuds Model: CHE-627 Internal Photos Page 2 of 4 Page 3 of 4 BT ANT Page 4 of 4

RF exposure evaluation FCC ID: 2ANEUCHE-627 §2.1093 Radiofrequency radiation exposure evaluation: Portable Devices. According to§15.247(i) and§1.1307b(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The 1-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, where  f(GHz) is the RF channel transmit frequency in GHz  Power and distance are rounded to the nearest mW and mm before calculation  When the minimum test separation distance is < 5 mm, a distance of 5 mm according is applied to determine SAR test exclusion.  The result is rounded to one decimal place for comparison  Channel Frequency (GHz) Max. Power (dBm) Tune up Power (dBm) Max. Tune up Power (dBm) Max. Tune up Power (mW) Test distance (mm) Result exclusion thresholds for 1-g SAR CH 00 2.402 3.83 3±1 4.0 2.51 5 0.78 3.0 Result: Base on the calculation value, No SAR measurement is required.

Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TEST REPORT FCC ID: 2ANEUCHE-627 Product: True wireless earbuds Model No.: CHE-627 Additional Model No.: CHE-625 Trade Mark: Cheero Report No.: TCT200323E025 Issued Date: Apr. 01, 2020 Issued for: Tra Company Ltd 6-6 Kitahama-higashi Chuo-ku Osaka-shi, Osaka 540-0031, Japan Issued By: Shenzhen Tongce Testing Lab. 1B/F., Building 1, Yibaolai Industrial Park, Qiaotou, Fuyong, Baoan District, Shenzhen, Guangdong, China TEL: +86-755-27673339 FAX: +86-755-27673332 Note: This report shall not be reproduced except in full, without the written approval of Shenzhen Tongce Testing Lab. This document may be altered or revised by Shenzhen Tongce Testing Lab. personnel only, and shall be noted in the revision section of the document. The test results in the report only apply to the tested sample. Report No.: TCT200323E025 Page 2 of 67 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com TABLE OF CONTENTS 1. Test Certification ..................................................................................... 3 2. Test Result Summary .............................................................................. 4 3. EUT Description ....................................................................................... 5 4. General Information ................................................................................. 6 4.1. Test environment and mode ................................................................................. 6 4.2. Description of Support Units ................................................................................ 7 5. Facilities and Accreditations .................................................................. 8 5.1. Facilities ................................................................................................................. 8 5.2. Location ................................................................................................................. 8 5.3. Measurement Uncertainty ..................................................................................... 8 6. Test Results and Measurement Data ..................................................... 9 6.1. Antenna requirement ............................................................................................ 9 6.2. Conducted Emission ........................................................................................... 10 6.3. Conducted Output Power ................................................................................... 14 6.4. 20dB Occupy Bandwidth .................................................................................... 19 6.5. Carrier Frequencies Separation ......................................................................... 24 6.6. Hopping Channel Number .................................................................................. 29 6.7. Dwell Time ............................................................................................................ 32 6.8. Pseudorandom Frequency Hopping Sequence ................................................ 37 6.9. Conducted Band Edge Measurement ................................................................ 38 6.10.Conducted Spurious Emission Measurement .................................................. 42 6.11.Radiated Spurious Emission Measurement ..................................................... 46 Appendix A: Photographs of Test Setup Appendix B: Photographs of EUT Report No.: TCT200323E025 Page 3 of 67 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. Test Certification Product: True wireless earbuds Model No.: CHE-627 Additional Model: CHE-625 Trade Mark: Cheero Applicant: Tra Company Ltd Address: 6-6 Kitahama-higashi Chuo-ku Osaka-shi, Osaka 540-0031, Japan Manufacturer: Tra Company Ltd Address: 6-6 Kitahama-higashi Chuo-ku Osaka-shi, Osaka 540-0031, Japan Date of Test: Mar. 24, 2020 – Mar. 31, 2020 Applicable Standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 FCC KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10:2013 The above equipment has been tested by Shenzhen Tongce Testing Lab. and found compliance with the requirements set forth in the technical standards mentioned above. The results of testing in this report apply only to the product/system, which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Tested By: Date: Mar. 31, 2020 Brews Xu Reviewed By: Date: Apr. 01, 2020 Beryl Zhao Approved By: Date: Apr. 01, 2020 Tomsin Report No.: TCT200323E025 Page 4 of 67 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 2. Test Result Summary Requirement CFR 47 Section Result Antenna Requirement §15.203/§15.247 (c) PASS AC Power Line Conducted Emission §15.207 PASS Conducted Peak Output Power §15.247 (b)(1) PASS 20dB Occupied Bandwidth §15.247 (a)(1) PASS Carrier Frequencies Separation §15.247 (a)(1) PASS Hopping Channel Number §15.247 (a)(1) PASS Dwell Time §15.247 (a)(1) PASS Radiated Emission §15.205/§15.209 PASS Band Edge §15.247(d) PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Report No.: TCT200323E025 Page 5 of 67 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. EUT Description Product: True wireless earbuds Model No.: CHE-627 Additional Model: CHE-625 Trade Mark: Cheero Bluetooth version: V5.0 Operation Frequency: 2402MHz~2480MHz Transfer Rate: 1/2/3 Mbits/s Number of Channel: 79 Modulation Type: GFSK, π/4-DQPSK, 8DPSK Modulation Technology: FHSS Antenna Type: Internal Antenna Antenna Gain: -1.5dBi Power Supply: Rechargeable Li-ion battery DC 3.7V Remark: All m…

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Page 1 of 2 Appendix A: Photographs of Test Setup Product: True wireless earbuds Model: CHE-627 Radiated Emission Page 2 of 2 Conducted Emission