2AKZ8-LHB18Bluetooth Headphone

FCC Caution： 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. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

(DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AKZ8-LHB18 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram, Schematics, Operational Description Block Diagram Schematics Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, ( Sally Yang) Rev 11/20/07

Bulk Unlimited Corp Model Difference 2020-10-27 EUT NAME: Bluetooth Headphone FCC ID: 2AKZ8-LHB18 MODEL : LHB18,QVIBE200 All the model are the same circuit and RF module, except model names. . Regards Sincerely Client’s signature Client’s name / title : Sally Yang / CEO Contact information / address: 2A, No 60, Lizhong Road, Dali Qingxi Town, Dongguan City, China

(DONGGUAN LINPA ACOUSTIC TECHNOLOGY CO.,LTD) Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: SUBJECT: FCC Application for FCC ID: 2AKZ8-LHB18 To Whom It May Concern: We, the undersigned, hereby authorize Alan Mei at Shenzhen BCTC Testing Co., Ltd. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Alan Mei of Shenzhen BCTC Testing Co., Ltd. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, ( Sally Yang)

External Photos

Label & label location Size:40*20mm Bluetooth Headphone FCC ID: 2AKZ8-LHB18 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. Label location

Internal Photos Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2AKZ8-LHB18 SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. 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 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. BT-EDR max possible output power (PK,conducted)：1±1dbm 0dBi logarithmic terms convert t o numeric result is nearly 1 2dbm=1.58mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=1.58/5*√2.402=0.49≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Modulation Frequency (MHz) Output Power (dBm) Max Antenna Gain (dBi) GFSK 2402 0.878 0 GFSK 2441 0.879 0 GFSK 2480 0.877 0 Pi/4 DQPSK 2402 1.234 0 Pi/4 DQPSK 2441 1.233 0 Pi/4 DQPSK 2480 1.259 0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.58/5*√2.441 =0.49≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2480 MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=1.58/5*√2.48=0.50≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Conclusion: No SAR is required.

No.：BCTC/RF-EMC-005 Page: 1 of 60 Edition：A.1 TEST REPORT Report No.: BCTC2009002360E Applicant: DongGuan LINPA ACOUSTIC TECHNOLOGY CO., LTD Product Name: Bluetooth Headphone Model/Type Ref.: LHB18 Tested Date: Sep. 30, 2020 to Oct. 13, 2020 Issued Date: Oct. 13, 2020 Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2009002360E No.：BCTC/RF-EMC-005 Page: 2 of 60 Edition：A.1 FCC ID : 2AKZ8-LHB18 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Bluetooth Headphone Trademark: LINPA WORLD Model/Type Ref.: LHB18 QVIBE200 Prepared For: DongGuan LINPA ACOUSTIC TECHNOLOGY CO., LTD Address: 2A, No 60, Lizhong Road, Dali Qingxi Town, Dongguan City, China. Manufacturer: DongGuan LINPA ACOUSTIC TECHNOLOGY CO., LTD Address: 2A, No 60, Lizhong Road, Dali Qingxi Town, Dongguan City, China. Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2F, East of B Building, Pengzhou Industrial, Fuyuan 1st Road, Qiaotou Community, Fuyong Street, Bao’an District, Shenzhen, China Sample Received Date: Sep. 30, 2020 Sample tested Date: Sep. 30, 2020 to Oct. 13, 2020 Issue Date: Oct. 13, 2020 Report No.: BCTC2009002360E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Sam zeng/Project Handler Zero Zhou/Reviewer Report No.: BCTC2009002360E No.：BCTC/RF-EMC-005 Page: 3 of 60 Edition：A.1 TABLE OF CONTENT Test Report Declaration Page 1. VERSION ............................................................ 5 2. TEST SUMMARY ..................................................... 6 3. MEASUREMENT UNCERTAINTY ....................................... 7 4. PRODUCT INFORMATION AND TEST SETUP ........................... 8 4.1 Product Information ..................................................... 8 4.2 Test Setup Configuration ................................................ 8 4.3 Support Equipment ..................................................... 9 4.4 Channel List ........................................................... 9 4.5 Test Mode ............................................................ 10 4.6 table of parameters of text software setting ................................ 10 5. TEST FACILITY AND TEST INSTRUMENT USED ........................ 11 5.1 Test Facility ........................................................... 11 5.2 Test Instrument Used .................................................. 11 6. CONDUCTED EMISSIONS ............................................ 13 6.1 Block Diagram Of Test Setup ........................................... 13 6.2 Limit ................................................................. 13 6.3 Test procedure ........................................................ 13 6.4 EUT operating Conditions .............................................. 13 6.5 Test Result ........................................................... 14 7. RADIATED EMISSIONS .............................................. 16 7.1 Block Diagram Of Test Setup ........................................... 16 7.2 Limit ................................................................. 17 7.3 Test procedure ........................................................ 18 7.4 EUT operating Conditions .............................................. 19 7.5 Test Result ........................................................... 20 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION .......................................................... 24 8.1 Block Diagram Of Test Setup ........................................... 24 8.2 Limit ................................................................. 24 8.3 Test procedure ........................................................ 25 8.4 EUT operating Conditions .............................................. 25 8.5 Test Result ........................................................... 26 9. CONDUCTED EMISSION ............................................. 27 9.1 Block Diagram Of Test Setup ........................................... 27 9.2 Limit ................................................................. 27 9.3 Test procedure ........................................................ 27 9.4 Test Result ........................................................... 28 10. 20 DB BANDWIDTH .................................................. 34 10.1 Block Diagram Of Test Setup .......................................... 34 10.2 Limit ................................................................ 34 10.3 Test procedure ....................................................... 34 10.4 Test Result .......................................................... 35 Report No.: BCTC2009002360E No.：BCTC/RF-EMC-005 Page: 4 of 60 Edition：A.1 11. MAXIMUM PEAK OUTPUT POWER .................................... 39 11.1 Block Diagram Of Test Setup .......................................... 39 11.2 Limit ................................................................ 39 11.3 Test procedure ....................................................... 39 11.4 Test Result .......................................................... 40 12. HOPPING CHANNEL SEPARATION ................................... 44 12.1 Block Diagram Of Test Setup .......................................... 44 12.2 Limit ................................................................ 44 12.3 Test procedure ....................................................... 44 12.4 Test Result .......................................................... 45 13. NUMBER OF HOPPING FREQUENCY .................................. 49 13.1 Block Diagram Of Test Setup .......................................... 49 13.2 Limit ..................................................…

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Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2009002360E 1. EUT TEST SETUP PHOTOGRAPHS Spurious emissions Te s t Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-0 07 Ver.：A.0 Page 1 of 2 Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2009002360E Conducted emissions ※※※※※ END OF REPORT ※※※※※ Te s t Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-0 07 Ver.：A.0 Page 2 of 2