2AO47-K025TrueWirelessStereoEarphone

K025 TWS USER MANUAL Power On/Off: 60mm 90mm Bluetooth 5.0 The earphones power on by taking it out from the charging case. When put down earphones in charging case, it will switch off and charged automatically. 1.Automatic pairing: When the indicator of earphones flash in red and blue light they will power on and pair automatically along with prompt tone. 2.Bluetooth Pairing: Turn on Bluetooth on your device and search for K025 when first pairing it, subsequent pairing happens automatically. 4.Precautions: FCC Statement 5.Indication Light Status 1.Earphones will automatically shut down if there is no operation in 5 minutes after switch on. When the phone is out of distance, earphones are disconnected. When ret urn to the distance, it will automatically connect to the phone. 2.If single-sided earphone is connected to the mobile phone, the two earphones cannot be connected. In this case, the mobile phone Bluetooth should be turned off. When the dual earphones light flashes red and blue, double -click one of the earphones and you can pair it lat er. Pairing mode: Led light flash in red and blue light Low battery: Led light flash red light Charging: Flash in red light Full charged: The red light is off 3.Function Key: Touch once: Play/Pause/Answer/Hang up phone call Touch twice: On right switch to next song On left switch to previous song Reject phone call Earbuds Reset Siri assistant function: Touch three times: On right to increase volume On left to decrease volume ON/OFF: Manually turn on by pressing for 3 seconds Manually turn off by pressing for 5 seconds Turn on 2 earbuds and then long-press the two earbuds for 10 seconds After both earbuds turned on, press both for 2 seconds to release and start SIRI 1. 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. (2)This device must accept any interference received, including interference that may cause undesired operation. 2. 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. 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 devicecan be used in portable exposure condition without restriction.

SCS-F18:ProjectandProductCertificationRepresentativeAuthorizationLetterPage1of2Rev6.0 775MontagueExpressway Milpitas,CA95035 Tel:408-526-1188 Fax:408-526-1088 Email: [email protected] ProjectandProduct Certification Representative AuthorizationLetter ReasonforAmendment(current/obsolete) RevisionHistory ApprovedDate FromTo InitialRelease(obsolete)1.01.0Nov-14-2006 Revisedwording(obsolete)1.02.0Sept–25-2007 Updatedcompanytemplate(obsolete)2.03.0Jan-31-2012 Updatedletterinformation(obsolete)3.04.0May-23-2014 AddedFCCIDfield(obsolete)4.05.0Sep-16-2014 Updatedcompanyname&logo(current)5.06.0Jun-27-2018 SCS-F18:ProjectandProductCertificationRepresentativeAuthorizationLetterPage2of2Rev6.0 ShenzhenKingstarIndustrialCo.,Ltd. (2020-06-01) To:BVCPS,INC. 775MontagueExpressway, Milpitas,CA95035 USA DearSir/Madam, Re:ProductCertificationRepresentativeAuthorizationLetter We,_____ShenzhenKingstarIndustrialCo.,Ltd.___herebyauthorize BVCPS,Inc.toactasaCertificationBodyforcertifyingfor thefollowingproject(s): Product::TrueWirelessStereoEarphones M/N:K025 FCCID:2AO47-K025 Sincerely, GangLiu ShenzhenKingstarIndustrialCo.,Ltd. Room211,MinLetechnologyBuliding,MeibanRoad,LongHuaDistrict, ShenZhen,China

SCS-F19:ConfidentialityRequestLetterPage 1 of 2 Rev6.0 775MontagueExpressway Milpitas,CA95035 Tel:408-526-1188 Fax:408-526-1088 Email: [email protected] m Confidentiality RequestLetter ReasonforAmendment(current/obsolete) RevisionHistory ApprovedDate FromTo InitialRelease(obsolete)1.01.0Nov-14-2006 AddingCFR2.459(obsolete)1.02.0August–11-2008 Updatedcompanytemplate&Addedtext box(obsolete) 2.03.0Jan-31-2012 AddedICconfidentialityletterform (obsolete) 3.04.0March-26-2015 CorrectionstoSTCform.Addedreference toKDB(obsolete) 4.05.0Nov-19-2015 Updatedcompanylogo(current)5.06.0Jun-26-2019 SCS-F19:ConfidentialityRequestLetterPage 2 of 2 Rev6.0 ShenzhenKingstarIndustrialCo.,Ltd. (2020-06-01) To: FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD Subject:PermanentConfidentialityRequestforFCCID:2AO47-K025 Pursuanttosections0.457and0.459ofCFR47,werespectfullyrequestpermanent confidentialtreatmentofthefollowingExhibitsaccompanyingthisapplicationas: -BlockDiagram -Schematics -OperationalDescription Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarily releasedtothepublic.Thepublicdisclosureofthesematerialsmaybeharmfultothe applicantandprovideunjustifiedbenefitstoitscompetitors. Theapplicantunderstandsthatdisclosureofthisapplicationandallaccompanying documentationwillnotbemadebeforethedateoftheGrantforthisapplication. Sincerely, GangLiu ShenzhenKingstarIndustrialCo.,Ltd. Room211,MinLetechnologyBuliding,MeibanRoad,LongHuaDistrict,ShenZhen,China

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Antenna

RFEXPOSUREEVALUATION EUTSpecification EUTTrueWirelessStereoEarphones ModelNumberK025 FCCID2AO47-K025 Antennagain(Max)5.54dBi OperationFrequency2402-2480MHz InputRatingDC3.7VBattery ClassificationPer StipulatedTestStandard §15.247(i),§2.1093 KindofDevice:BluetoothVer.5.0 ModulationGFSK,π/4-DQPSK Max.outputpower2.16dBm(0.0016W) TestRequirement: Accordingto§15.247(i)and§1.1307(b)(1),systemsoperatingunderthe provisionsofthissectionshallbeoperatedinamannerthatensuresthatthe publicisnotexposedtoradiofrequencyenergylevelinexcessofthe Commission’sguidelines. RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualityforTCBapproval. OneantennaisavailablefortheEUT.Theminimumseparationdistanceis 5mm. BTDSS: AccordingtoKDB447498,nostand-alonerequiredforBTantenna,andno simultaneousSARmeasurementisrequired. Signature: AlanHe Date:2020-05-29 Transmit Frequency (MHz) Mode Measured Power (dBm) Tuneup Power (dBm) Maxtuneup power(dBm) Calculation Result 1-g SAR 2402GFSK0.410±110.3902183 2441GFSK0.821±120.4952403 2.480GFSK1.361±120.4991813 2402 Π/4-DQ PSK 1.061±120.4912683 2441 Π/4-DQ PSK 1.632±130.6234793 2480 Π/4-DQ PSK 2.162±130.6284403

Report No.: EA2005295F01001 1 of 60 TRF No. FCC Part 15.247/A Ver.1.0 ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT INTENTIONAL RADIATOR CERTIFICATION TO FCC PART 15 SUBPART C REQUIREMENT OF True Wireless Stereo Earphones Model No.: K025 Trademark: N/A FCC ID:2AO47-K025 Report No.: EA2005295F01001 Issue Date: June 02, 2020 Prepared for Shenzhen Kingstar Industrial Co.,Ltd. Room 211, Min Le technology Buliding, Meiban Road, Long Hua District, ShenZhen, China Prepared by Dong Guan Anci Electronic Technology Co., Ltd. 1-2 Floor, Building A, No.11, Headquarters 2 Road, Songshan, Lake Hi-tech Industrial Development Zone, Dongguan City, Guangdong Pr., China. This report shall not be reproduced, except in full, without the written approval of Dong Guan Anci Electronic Technology Co., Ltd. Report No.: EA2005295F01001 2 of 60 TRF No.: FCC 15.209/A Rev. 1.0 VERIFICATION OF COMPLIANCE Applicant: Shenzhen Kingstar Industrial Co.,Ltd. Room 211, Min Le technology Buliding, Meiban Road, Long Hua District, ShenZhen, China Manufacturer: Shenzhen Kingstar Industrial Co.,Ltd. Room 211, Min Le technology Buliding, Meiban Road, Long Hua District, ShenZhen, China Product Description: True Wireless Stereo Earphones Trade Mark: N/A Model Number: K025 We hereby certify that: The above equipment was tested by Dong Guan Anci Electronic Technology Co., Ltd.The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10-2013 and the energy emitted by the sample EUT tested as described in this report is in compliance with conducted and radiated emission limits of FCC Rules Part 15.247(2019). Date of Test : May 26, 2020 to May 31, 2020 Prepared by : Tomas Yang/Supervisor Reviewer & Authorized Signer : Alan He/Manager Report No.: EA2005295F01001 3 of 60 TRF No.: FCC 15.209/A Rev. 1.0 Modified Information Version Summary Revision Date Report No. Ver.1.0 Original Report / EA2005295F01001 Report No.: EA2005295F01001 4 of 60 TRF No.: FCC 15.209/A Rev. 1.0 Table of Contents 1. GENERAL INFORMATION ......................................................................................................... 6 1.1 PRODUCT DESCRIPTION ............................................................................................................................. 6 1.2 TEST METHODOLOGY ................................................................................................................................. 6 1.3 TEST FACILITY ............................................................................................................................................. 7 2. SYSTEM TEST CONFIGURATION............................................................................................... 8 2.1EUT CONFIGURATION ................................................................................................................................. 8 2.2 EUT EXERCISE..................................................................................................................................... 8 2.3 TEST PROCEDURE..................................................................................................................................... 8 2.4CONFIGURATION OF TESTED SYSTEM ........................................................................................................ 9 3. SUMMARY OF TEST RESULTS ................................................................................................. 10 4. DESCRIPTION OF TEST MODES .............................................................................................. 11 5. TEST SYSTEM UNCERTAINTY .................................................................................................. 12 6. CONDUCTED EMISSIONS TEST ............................................................................................... 13 6.1MEASUREMENT PROCEDURE: ................................................................................................................... 13 6.2 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ......................................................................... 13 6.3MEASUREMENT EQUIPMENT USED: .......................................................................................................... 13 6.4 MEASUREMENT RESULT: .......................................................................................................................... 14 7. RADIATED EMISSION TEST ....................................................................................................... 15 7.1MEASUREMENT PROCEDURE .................................................................................................................... 15 7.2TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .......................................................................... 17 7.3 MEASUREMENT EQUIPMENT USED: ......................................................................................................... 18 7..4 RADIATED EMISSION LIMIT ...................................................................................................................... 19 7.5 MEASUREMENT RESULT ......................................................................................................................... 20 7.5 RADIATED MEASUREMENT PHOTOS: ....................................................................................................... 27 8. CHANNEL SEPARATION TEST ................................................................................................. 28 8.1MEASUREMENT PROCEDURE .................................................................................................................... 28 8.2TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .......................................................................... 28 8.3 MEASUREMENT EQUIPMENT USED: ......................................................................................................... 28 8.4MEASUR…

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