2ALCFXO-9852TWS Earphones and Charging Case

TWS Earphones and Charging Case XO-9852 P329.01X Liberty TWS earbuds in charging case What’s include? - TWS earbuds with charging case x 1 - Micro USB charging cable x 1 - Interchangeable ear tips x 2 pairs Charging the earbuds: Put the earbuds into the charging case to charge the earbuds. Make sure the earbuds are securelyplaced into the case. The LED indicators on earbuds will light up in red when the earbuds are being charged. The LED indicators on earbuds will go out when the earbuds are fully charged. (When the earbuds are being charged, the LED indicator on charging case will flash in blue.) Charging the charging case: Use the provided micro USB cable to connect to an AC adapter or computer to charge the charging case. The LED indicators on charging case will flash in blue when the charging caseis being charged. The LED indicators on charging casestay solid blue when the charging caseis fully charged. How to use? When the earbuds are in the charging box, just take them out and the 2 earbuds will power on automatically. (When the earbuds are not in the charging box, press and hold both power buttons simultaneously for 2-3 seconds to power on the earbuds.) When the earbuds are powered on, the LED indicators will alternately flash red and blue. After 2-3 seconds, the LED indicators will flash blue slowly, which means both earbuds are paired with each other successfully. (If both earbuds do not pair together after 10 seconds, tap the power button on either earphone to force them to pair.) Check Bluetooth setting menu on your smart devices and make sure that Bluetooth is turned ON. Connect with the device listed as “Liberty wireless earbuds”. FCC Statement Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 or more 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 This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions (1)this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Dongguan Xing Yue Electronic co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2019-12-18 Subject; Request for Long Term Confidentiality FCC ID: 2ALCFXO-9852 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Sunny zhang Title: N/A

Dongguan Xing Yue Electronic co., Ltd Agent Authorization C ompany: Dongguan Xing Yue Electronic co., Ltd A ddress: #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China P roduct Name: TWS Earphones and Charging Case M odel Number(s): XO-9852 P roduct Description: TWS Earphones and Charging Case W e 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: 2019-12-18 Name: Sunny zhang Title: N/A Company: Dongguan Xing Yue Electronic co., Ltd

Page 1 of 10 Appendix B: Photographs of EUT Product: TWS Earphones and Charging Case Model: XO-9852 External Photos Page 2 of 10 Page 3 of 10 Page 4 of 10 Page 5 of 10 Left Page 6 of 10 Page 7 of 10 Page 8 of 10 Right Page 9 of 10 Page 10 of 10

Label Artwork and Location Model: XO-9852 Label: Size: L*W=25*5mm TWS Earphones and Charging Case Model: XO-9852 FCC ID: 2ALCFXO-9852 Location

Page 1 of 6 Appendix B: Photographs of EUT Product: TWS Earphones and Charging Case Model: XO-9852 Internal Photos Left Page 2 of 6 Antenna Page 3 of 6 Page 4 of 6 Right Page 5 of 6 Page 6 of 6

RF exposure evaluation FCC ID: 2ALCFXO-9852 §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 0.80 0±1 1 1.26 5 0.39 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: 2ALCFXO-9852 Product: TWS Earphones and Charging Case Model No.: XO-9852 Additional Model No.: N/A Trade Mark: N/A Report No.: TCT191205E007 Issued Date: Dec. 12, 2019 Issued for: Dongguan Xing Yue Electronic co., Ltd #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China 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.: TCT191205E007 Page 2 of 66 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 ................................................................................ 6 5. Facilities and Accreditations .................................................................. 7 5.1. Facilities ................................................................................................................. 7 5.2. Location ................................................................................................................. 7 5.3. Measurement Uncertainty ..................................................................................... 7 6. Test Results and Measurement Data ..................................................... 8 6.1. Antenna requirement ............................................................................................ 8 6.2. Conducted Emission ............................................................................................. 9 6.3. Conducted Output Power ................................................................................... 13 6.4. 20dB Occupy Bandwidth .................................................................................... 17 6.5. Carrier Frequencies Separation ......................................................................... 21 6.6. Hopping Channel Number .................................................................................. 25 6.7. Dwell Time ............................................................................................................ 28 6.8. Pseudorandom Frequency Hopping Sequence ................................................ 32 6.9. Conducted Band Edge Measurement ................................................................ 33 6.10. Conducted Spurious Emission Measurement ................................................. 36 6.11. Radiated Spurious Emission Measurement .................................................... 39 Appendix A: Photographs of Test Setup Appendix B: Photographs of EUT Report No.: TCT191205E007 Page 3 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 1. Test Certification Product: TWS Earphones and Charging Case Model No.: XO-9852 Additional Model No.: N/A Trade Mark: N/A Applicant: Dongguan Xing Yue Electronic co., Ltd Address: #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Manufacturer: Dongguan Xing Yue Electronic co., Ltd Address: #98 LiWu Swan Industrial District, Qiao Tou Town, Dong Guan City, Guang Dong, China Date of Test: Dec. 06, 2019 – Dec. 11, 2019 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: Dec. 11, 2019 Brave Zeng Reviewed By: Date: Dec. 12, 2019 Beryl Zhao Approved By: Date: Dec. 12, 2019 Tomsin Report No.: TCT191205E007 Page 4 of 66 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.: TCT191205E007 Page 5 of 66 Hotline: 400-6611-140 Tel: 86-755-27673339 Fax: 86-755-27673332 http://www.tct-lab.com 3. EUT Description Product: TWS Earphones and Charging Case Model No.: XO-9852 Additional Model No.: N/A Trade Mark: N/A Bluetooth Version: V5.0 Operation Frequency: 2402MHz~2480MHz Transfer Rate: 1/2 Mbits/s Number of Channel: 79 Modulation Type: GFSK, π/4-DQPSK M…

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Page 1 of 2 Appendix A: Photographs of Test Setup Product: TWS Earphones and Charging Case Model: XO-9852 Radiated Emission Left Page 2 of 2 Conducted Emission