2ASLT-V8TWS Bluetooth headset

ⱥ᪥ᩥ㻌୰ⱥᩥ㻌 㟁㔞䛜ప䛔ሙྜ䜲䝲䝩䞁䜲䞁䝆䜿䞊䝍䛾㉥䝷䜲䝖䛜L⁛䛧ጞ䜑䚸䛺䜛䜉䛟᪩䛟඘㟁䛧䛶䛟䛰䛥䛔䚹㻝㻚䜲䝲䝩䞁䜢䜿䞊䝇䛻ᡠ䛧䛯䜙䚸⮬ື䛻඘㟁䛧ጞ䜑䜎䛩䚹㻞㻚඘㟁᏶ᡂᚋ䚸⤥㟁䛜⮬ື䛻Ṇ䜑䜎䛩䚹 䛤ὀព䠖ึᅇ䛾౑⏝䛿䜲䝲䝩䞁䛾㟁㔞䜢㻝㻜㻜䠂䜎䛷඘㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㟁䛧䛶䛟䛰䛥䛔䚹 ([ZZUT)UTZXUR Restore factory setting Charge Charging Case र఩ 䜲䝲䝩䞁䛾඘㟁 ඘㟁䜿䞊䝇 Red indicators flash when battery low, please charge in time.1.Put both earbuds into the charging case, they will charge automatically.2.Charging will stop when earbuds are fully charged. Charging earbuds Note: Please put both earbuds in the charging case to fully charge them on first use. ᚘགྷ࠰স䇴㖤 䈭ᣀᢁᵰ㬓⢏ީᦿθ㙩ᵰ㓘㬓䰠⛷θᘡ䙕഑࠱㙩ᵰ⭫Ⓠ䭤঩ਥȾ Please turn off the Bluetooth of the mobile phone and the earphone light will flash red / blue. Quickly press the power button of the earphone four times. 㟁ヰ䛾㻮㼘㼡㼑㼠㼛㼛㼠㼔䜢䜸䝣䛻䛩䜛䚸䝦䝑䝗䝉䝑䝖䛜㉥㻛㟷䛻L⁛䛧䚸䝦䝑䝗䝉䝑䝖䛾㟁※䝪䝍䞁䜢㻠ᅇ㐃⥆ᢲ䛩 䜲䝲䝩䞁ึᮇ໬䛩䜛᪉ἲ 㟁※䜸䞁㻌 Į ᕥ㻛ྑ䜲䝲䝩䞁㻹㻲㻮䝪䝍䞁㻟⛊㛫䝻䞁䜾䝍䝑䝏 㟁※䜸䝣㻌㻌㻌㻌㻌㻌䊻㻹㻲㻮䝪䝍䞁䜢㻡⛊㛫ᢲ䛩䠄㠀᥋⥆≧ែ䠅᭤ᡠ䛧㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ᕥ⪥஧ᅇ㐃⥆䝍䝑䝏 ᭤7日䜚㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ྑ⪥஧ᅇ㐃⥆䝍䝑䝏 㡢㔞㻗䚷㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ྑ⪥䜢䝍䝑䝏䛧䛯䜎䜎 㡢㔞㻙䚷㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ᕥ⪥䜢䝍䝑䝏䛧䛯䜎䜎 㟁ヰ䛻ฟ䜛㻛෌⏕㻛೵Ṇ㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ᕥ㻛ྑ୍ᅇ䝍䝑䝏 ⤊ヰ㻛㟁ヰᣄྰ㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ᕥ㻛ྑ䠎⛊㛫䝍䝑䝏䛧䛯䜎䜎 㼟㼕㼞㼕➼䛾ႏ㉳㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌㻌 Į ᕥ㻛ྑ୕ᅇ㐃⥆䝍䝑䝏 ʗʛʙૌࡈ Ȯக҃ć Turn on Hold left/right earbud MTB for 3 seconds Turn off Tickle the MFB button for 5 seconds (when it is disconnected.) Previous song Tap left earbud power button twiceNext song Tap right earbud power button twiceVolume+ Hold right earbud power button Volume- Hold left earbud power button Play/pause Tap left/ right earbud power button oncePick up phone Tap left/ right earbud power button onceHang up phone Hold left/right earbud power reject calling button for 2 seconds Voice assistant Tap left/ right earbud activation power button 3 times ᖉ㙩ᵰ⭫䠅քᰬθ㙩ᵰ㓘⚥䰠⛷θ䈭਀ᰬݻ⭫Ⱦሼ㙩ດ᭴ޛⴈѣθݻ⭫ሼ㠠ࣞ䘑㺂Ⱦ㙩ᵰݻ┗⭫੄θݻ⭫ⴈሼڒ↘ሯ㙩ᵰݻ⭫Ⱦ ⌞φ俌⅗ֵ⭞ᰬθ䈭ሼ㙩ᵰ᭴ݻޛ⭫ԉݻ޻┗⭫θݻ┗੄ֵ⭞Ⱦ Ҭࣔ 㙩ᵰݻ⭫ ⭫ݻ⭫ԉݻ ӱܰିܘ ᔶᵰ䮵᤿ᐜ਩㙩ᵰ0)%䭤〈 ީᵰ䖱䀜0)%䭤〈 䶔䘔᧛⣬ᘷ 丩䠅䮵᤿ᐜ㙩⭫Ⓠ䭤 сжᴨਂ࠱਩㙩⭫Ⓠ䭤ржᴨਂ࠱ᐜ㙩⭫Ⓠ䭤 丩䠅䮵᤿਩㙩⭫Ⓠ䭤᫣᭴Ჸڒঋ࠱ᐜ㙩ᡌ਩㙩⭫Ⓠ䭤᧛੢⭫䈓ঋ࠱ᐜ㙩ᡌ਩㙩⭫Ⓠ䭤ᤸᯣ⭫䈓ᤈ᧛ᶛ⭫䮵᤿ᐜ㙩ᡌ਩㙩㓜V䈣丩ࣟᢁ◶⍱䖱䀜ᐜ਩㙩ᵰ0)%䭤с ठܶ概ࡴԱᝅжѠ㙩ᵰθঋᵰ′′′′䈋у᭥ᤷржᴨ?丩䠅 㙩ᵰ᤽示⚥ 2+*ܗठ䍥 ⣬ᘷ ⚥ݿᔶᵰ 㬓⚥䰠〈ީᵰ 㓘⚥䰠〈ᩒ0点㙩ᵰ 㓘㬓Ӛᴵ䰠⛷㙩ᵰ䘔᧛ᡆࣕ ᰖӤ⚥ 丩҆⣬ᘷ ᰖӤ⚥⭫⊖⭫䠅ք 㓘⚥䰠⛷ݻ⭫ѣ 㓘⚥䮵Ӥݻ┗ 㓘⚥➺⚣ LED Indicator Status IndicatorsTurn on Blue indicators flash one secondTurn off Red indicators flash one secondSearching mode The indicator lights will flash red and bluePairing successfully No light Music-play mode No lightBattery low Red indicators flashCharging mode Red indicators stay solid Fully charged Red indicators off Earbuds indicator ⣬ខĮʹ˹˰̈ʹ̈ˍˆ̌˔⴮ᘒʌ㺞示䴱Ⓠʿ̈Į䶈˾ʹ ̋ж〈⛯⚥䴱Ⓠʿ˪Į䎚˾ʹ ̋ж〈⛯⚥˯ʷ˿̈˅ㄥᵡʰὒ0点Į䎚䶈Ӛӈʉ⛯⓻˯ʷ˿̈˅ᇂᡆ Į 䶈˾ʹ ̋ɪς〈ɲʆʉжഔ⛯⓻ 丩ᾳ߃⭕Į⎾⚥䴱䠅քɢĮ䎚˾ʹ ̋ɪ⛯⓻ݻ䴱ѣĮ䎚˾ʹ ̋ɪ⛯⚥ݻ䴱ᇂᡆ Į 䎚˾ʹ ̋ɪ䶈˾ʹ ̋ʉ༿ᴪɵȽρ〈ᗂ⎾⚥ MFEɼˋʐʉĜʗ 䜲䝲䝩䞁䛾≧ែ䛿┦ᛂ䛾䜲䝲䝩䞁䜲䞁䝆䜿䞊䝍䛷韭♧䛧䜎䛩 Ҁݒ޲৅ ગ৥ ੒࣏ V8 ੒࣏ ࣫֨ՕੴՇ࣫Оȕ7OङO6NUTKȕ澞۩ङગוڪબӹ =GZ INځऀ୆ث'VVRK =GZ INչO6NUTK澞 Ԅݻ⭫ԉ਌࠰㠠ࣞᔶᵰχᡌީᵰ⣬ᘷс䀜᪮䀜᧝᤿䫤〈㬓⚥䰠⛷⅗ᔶᵰȾ ᔶᵰφ ᵰφީ ֵ⭞,26㌱㔕ᢁᵰ਀䜞࠼ᆿউ㌱㔕ᢁᵰ䘔᧛р㙩ᵰ੄θ䀜᪮ᐜ㙩ᵰᡌ਩㙩ᵰ䀜᧝᤿䫤⅗ᢉᔶ䈣丩ࣟᢁᬃ֒Ⱦ 䞃ሯᬃ֒䈪᱄ ᭴ݻޛ⭫ԉ㠠ࣞީᵰᒬ䘑ݻޛ⭫⣬ᘷᡌ㘻ᯣᔶ㬓⢏䘔᧛࠼䫕੄㠠ࣞީᵰȾ 6LULф䈣丩ࣟᢁ Ԅݻ⭫ԉ޻਌࠰њѠ㙩ᵰᒬ᫋ᦿ㔓㕎㟒χ ሼњѠ㙩ᵰ᭴ഔݻ⭫ԉݻ⭫δ㙩ᵰ䘑ݻޛ⭫ ⣬ᘷεχ  ਌࠰њѠ㙩ᵰθ㙩ᵰ㠠ࣞᔶᵰӈ䘔ᒬ䘑ޛᅀ ᖻ䞃ሯ′′′′ᕅ 㓘㬓⚥Ӛᴵ䰠⛷εχ  㙩ᵰ㠠ࣞᇂᡆ䞃ሯθ䞃ሯᡆࣕ੄ࢥ㙩᤽示⚥➺ ⚣θѱ㙩᤽示⚥㓘㬓⚥Ӛᴵ䰠⛷ χ ᢉᔶᢁᵰ㬓⢏ࣕ㜳ᒬᩒ0点θᢴࡦɋ9Ɍ੃〦ᒬ⛯࠱䘔᧛঩ਥχ Settings Bluetooth V8 Bluetooth Now discoverable as ȕ Qi iPhone ȕ  MYDEVICESTo pair Apple Watch with your iPhone, go to theWatch app. Pairing Manual Earbuds Manual IOS and part of the Android users can triple touch the left or right haptic button to turn on the voice assistant. Siri and other Voice Assistant Take out the earbuds from the charging case or touch the haptic button for 3 seconds until the blue indicators flash once. Turn ON Turn OFF Put the earbuds into the charging case, they would turn off and star charging or disconnect the Bluetooth, it will turn off in about 5 minutes. 1.Take out the two earbuds from the charging case and peel off the insulating film. 2.Put the earbuds into the charging case to charge (the earbuds are in charging state). 3.Take out the two earbuds, they will turn on and pair automatically and will be prepared for pairing to the phone (the indicator will turn to Red and blue alternately). 4.After successful paired the indicator of the right earbud will go off and the indicator of left earbud will turn to Red and blue alternately.5.Turn on the Bluetooth function on your phone and search V8 and connect it. Settings Bluetooth V8 Bluetooth Now discoverable as ȕ Qi iPhone ȕ  MYDEVICESTo pair Apple Watch with your iPhone, go to theWatch app. ୧⪥䝨䜰䝸䞁䜾᧯సㄝ᫂ ɼʼʳˋɈࢀȞื 㻵㻻㻿䝅䝇䝔䝮➃ᮎ䛭䜜䛻୍㒊䛾㻭㼚㼐㼞㼛㼕㼐䝅䝇䝔䝮䛸᥋⥆≧ែ䛷ᕥ⪥䜲䝲䝩䞁㼛㼞ྑ⪥䜲䝲䝩䞁䜢䠏ᅇ㐃⥆䝍䝑䝏䛧䜎䛩䛸㻿 㼕㼞㼕 ➼䛾㡢ኌ䜰䝅䝇䝖ႏ㉳ ྍ⬟䛷䛩䚹౑⏝᏶஢ᚋ䚸䜎䛯୍ᅇ䝍䝑䝏䛧䜎䛩䛸㻿㼕㼞䜢㛢䜑䜛䛣䛸䛜䛷䛝䜎䛩䚹 㻿㼕㼞㼕࿧䜃ฟ䛧 䜿䞊䝇䛛䜙ฟ䛥䜜䜛䛸⮬ື㉳ື䠗ཪ䛿䜲䝲䝩䞁㟁※䜸䝣䛾≧ែ䛷㟷䝷䞁䝥䛜୍ᅇL⁛䛩䜛䜎䛷䠏⛊㛫䝍䝑䝏䛧䜎䛩䚹 ㉳ື㟁※䜸䝣 ඘㟁䜿䞊䝇䛻ᡠ䛥䜜䜛䛸㟁※䜸䝣䛻䛺䜚䚸඘㟁䛧ጞ䜑䜎䛩䚹ཪ䛿➃ᮎ䛸䛾᥋⥆䜢ษ䛳䛶䠑ศ㛫⤒䛱䜎䛩䛸⮬ື㟁※䜸䝣䛻䛺䜚䜎䛩䚹 㻝㻚୧⪥䜲䝲䝩䞁䜢ྲྀ䜚ฟ䛧䛶඘㟁᥋L䛻(오후)䜚௜䛡䛶䛔 䜛⤯⦕⭷䜢๤䛜䛧䛶䛟䛰䛥䛔䚹㻞㻚 ୧⪥䜲䝲䝩䞁䜢䜿䞊䝇䛻ᡠ䛧䛶䛟䛰䛥䛔䚹䠄䜲䝲䝩䞁䛿 ඘㟁≧ែ䛻䛺䜚䜎䛩䠅㻟㻚෌ᗘྠ᫬䛻୧⪥䜲䝲䝩䞁䜢ྲྀ䜚ฟ䛧䜎䛩䛸䜲䝲䝩䞁䛜⮬ື㉳ື䛩䜛ୖ䛻ᕥྑ䝨䜰䝸䞁䜾䝰䞊䝗䛻ධ䜚䜎䛩䚹䠄㉥㟷䝷䞁䝥䛜஺஫䛻L⁛䠅㻠㻚ᕥྑ䝨䜰䝸䞁䜾⮬ື䛻᏶ᡂᚋ䚸ྑ⪥䜲䝲䝩䞁䛿L⁛䛜ᾘ䛘䜎䛩䛜ᕥ⪥䜲䝲䝩䞁䛿㉥㟷䝷䞁䝥஺஫䛻L⁛䛧 䜎䛩䚹㻡㻚䝇䝬䝩䛾䝤䝹䞊䝖䜳䞊䝇ᶵ⬟䜢䜸䞁䛻䛧䚸䝕䝞䜲䝇୍ ぴ䛛䜙䛆㻌㼂㻤㻌䛇䛸䛔䛖䝕䝞䜲䝇䜢㑅ᢥ䛧䛶᥋⥆䛥䛫䛶䛟䛰䛥䛔䚹 V8 CH AD  ⅘䘄ֵ⭞ᵢޢਮⲺᰖ㓵⭫ᆆӝ૷θѰҼ 䇟ᛞᤛᴿᴪླⲺֵ⭞։僂θ䈭൞ֵ⭞ᵢӝ૷ࢃԊ㓼䰻䈱ᬃ֒᤽঍θѰ䚵ރуᗻ㾷Ⲻ՚ᇩӁ᭻ਇ⭕θ䈭у㾷㠠㺂᣼মᵢ૷θ䈭ֵ⭞ḽ⭫ಞȾݻ߼ ֵ⭞䈪᱄Ҝ ߡ੐ݤԿ ΃ ‡ ʇSҒ՚ٯ࠳ SҒ՚ѫ୿ލ ֢ͤЇױͣڿࡉґՙѭ૎઴न ࠫ୔ ङୃՕљͫՕљ٫ࡥள䂫ީՑ੽ࡊஅࡴࣿٯޙव࡮䊫澝࢕䀽澝࡮਎澝䃷஧澝ࡥ䊫ͫѸЉਈࢪȜȜࡊ֢ͤЇױͣڿࡉ䀫ࡶ வЇࡊ Јڂࡊ ж஍ڿࡉ ↚ӝ૷޻㖤䬸⭫⊖θ䈭वሼӝ૷ᳪ䵨൞ᕰ⛾ⲺᰛᲈсȽ⚡✚ᡌᢊޛ⚡ѣθԛރ⠼⛮Ⱦ ऄࡐઊճ у㾷▒≪ᰬֵ⭞ᵢ૷θഖѰ≪Րሷ䬷օؗਭу㾷ֵ⭞ޭᴿ㞆㲶ᙝⲺ⓬ࡸᶛ␻⍍䈛䇴༽Ⱦуቅᗹ᧛䀜ࡦौᆜ⢟૷θ䈭⭞␻≪ᖱᓋⲺ␻⍍Ⱦ у㾷ሼ䇴༽㖤ӄքӄ  đᡌ儎ӄ  đⲺᶷㄥ ⧥ູ⑟ᓜсֵ⭞Ⱦу㾷ሼ䇴༽ᣋ᧭ӄ⚡ѣθ䚵ރӝ⭕⠼⛮Ⱦ  у㾷⭞ቌ䭆⢟૷䀜⻦㙩ᵰθੜࡏ᱉䙖ᡆࡤ՚Ⱦ  у㾷ሼԱ֋ᵸ⢟ᨈ䘑㙩ᵰѣθੜࡏ᱉ᦕ՚⭫ ᆆݹԬȾу㾷ቓ䈋᣼䀙㙩ᵰȾ у㾷䮵ᰬ䰪䶏㖤ᵢӝ૷θྸᴿ䎻䗽жѠᴾᵠ ֵ⭞θ䈭਀ᰬݻ⭫ؓޱԛ⺤ؓ↙ᑮᐛ֒Ⱦ у㾷ֵ⭞⭫⍷䠅ཝӄ $ Ⲻ⭫Ⓠ䘸䞃ಞ㔏ᵢӝ ૷ݻ⭫θ⭫⍷䠅䗽ཝՐሯ⭫⊖ӝ⭕ᦕඅȾ Under water Above water 6GXGSKZKXYVKIOLOIGZOUT Signal transmission distance shown as below: ”P6LJQDOVLVLQQRUPDOWUDQVPLVVLRQ P6LJQDOVZLOOEHLQWHUUXSWHG V8 User Manual EN AD Please note this when you s…

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SHENZHEN XIWXI TECHNOLOGY CO., LTD 2021.04.27 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: TWS Bluetooth headset Trademark: N/A MODEL : V8 FCC ID: 2ASLT-V8 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : LI HAIBO /Manager Contact information / address: No. 47, the 3rd Shabo Road, Shajing Town, Bao'an District, Shenzhen, China

SHENZHEN XIWXI TECHNOLOGY CO., LTD 2021.04.27 Eurofins MET Labs 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : LI HAIBO/Manager Contact information / address: No. 47, the 3rd Shabo Road, Shajing Town, Bao'an District, Shenzhen, China

External Photos

Label & label location 10mm*5mm FCC ID: 2ASLT-V8 Label location Label location

Internal Photos Antenna Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2ASLT-V8 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)：2±1dbm 3.12dBi logarithmic terms convert to numeric result is nearly 2.051 3dBm=2.00mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=2.00/5*√2.402=0.62≤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 -1.534 3.12 GFSK 2441 -1.220 3.12 GFSK 2480 -1.612 3.12 Pi/4 DQPSK 2402 0.826 3.12 Pi/4 DQPSK 2441 1.164 3.12 Pi/4 DQPSK 2480 0.760 3.12 8DPSK 2402 1.182 3.12 8DPSK 2441 1.538 3.12 8DPSK 2480 1.154 3.12 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=2.00/5*√2.441=0.62≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=2.00/5*√2.48=0.63≤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 69 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2103934387E Applicant: SHENZHEN XIWXI TECHNOLOGY CO., LTD Product Name: TWS Bluetooth headset Model/Type Ref.: V8 Tested Date: 2021-03-30 to 2021-05-17 Issued Date: 2021-05-17 Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 2 of 69 Edition：A.3 FCC ID: 2ASLT-V8 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: TWS Bluetooth headset Trademark: N/A Model/Type Ref.: V8 Prepared For: SHENZHEN XIWXI TECHNOLOGY CO., LTD Address: No. 47, the 3rd Shabo Road, Shajing Town, Bao'an District, Shenzhen, China Manufacturer: SHENZHEN XIWXI TECHNOLOGY CO., LTD Address: No. 47, the 3rd Shabo Road, Shajing Town, Bao'an District, Shenzhen, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2021-03-30 Sample tested Date: 2021-03-30 to 2021-05-17 Issue Date: 2021-05-17 Report No.: BCTC2103934387E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Willem Wang/Project Handler Zero Zhou/Reviewer Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 3 of 69 Edition：A.3 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 ................................................ 9 4.3 Support Equipment ..................................................... 9 4.4 Channel List .......................................................... 10 4.5 Test Mode ............................................................ 10 4.6 table of parameters of text software setting ................................ 11 5. TEST FACILITY AND TEST INSTRUMENT USED ........................ 12 5.1 Test Facility ........................................................... 12 5.2 Test Instrument Used .................................................. 12 6. CONDUCTED EMISSIONS ............................................. 14 6.1 Block Diagram Of Test Setup ............................................ 14 6.2 Limit ................................................................. 14 6.3 Test procedure ........................................................ 14 6.4 EUT operating Conditions ............................................... 14 6.5 Test Result ........................................................... 15 7. RADIATED EMISSIONS ............................................... 17 7.1 Block Diagram Of Test Setup ............................................ 17 7.2 Limit ................................................................. 18 7.3 Test procedure ........................................................ 19 7.4 EUT operating Conditions ............................................... 20 7.5 Test Result ........................................................... 21 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION ................................................... 25 8.1 Block Diagram Of Test Setup ............................................ 25 8.2 Limit ................................................................. 25 8.3 Test procedure ........................................................ 26 8.4 EUT operating Conditions ............................................... 26 8.5 Test Result ........................................................... 27 9. CONDUCTED EMISSION .............................................. 28 9.1 Block Diagram Of Test Setup ............................................ 28 9.2 Limit ................................................................. 28 9.3 Test procedure ........................................................ 28 9.4 Test Result ........................................................... 29 10. 20 DB BANDWIDTH .................................................. 38 10.1 Block Diagram Of Test Setup .......................................... 38 Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 4 of 69 Edition：A.3 10.2 Limit ................................................................ 38 10.3 Test procedure ....................................................... 38 10.4 Test Result .......................................................... 39 11. MAXIMUM PEAK OUTPUT POWER .................................... 44 11.1 Block Diagram Of Test Setup .......................................... 44 11.2 Limit ................................................................ 44 11.3 Test procedure ....................................................... 44 11.4 Test Result .......................................................... 45 12. HOPPING CHANNEL SEPARATION .................................... 50 12.1 Block Diagram Of Test Setup .......................................... 50 12.2 Limit ................................................................ 50 12.3 Test procedure ....................................................... 50 12.4 Test Result .......................................................... 51 13. NUMBER OF HOPPING FREQUENCY .................................. 56 13.1 Block Diagram Of Test Setup .......................................... 56 13.2 Limit ................................................................ 56 13.3 Test …

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Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 41 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 42 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 43 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 44 of 69 Edition：A.3 11. MAXIMUM PEAK OUTPUT POWER 11.1 Block Diagram Of Test Setup 11.2 Limit FCC Part15 (15.247), Subpart C Section Test Item Limit Frequency Range (MHz) Result 15.247(b)(1) Peak Output Power 0.125 watt or 21dBm 2400-2483.5 PASS 11.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 3MHz. VBW = 3MHz. Sweep = auto; Detector Function = Peak. 3. Keep the EUT in transmitting at lowest, medium and highest channel individually. Record the max value. Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 45 of 69 Edition：A.3 11.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： DC 3.7V Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low -1.534 21 GFSK Middle -1.220 21 GFSK High -1.612 21 Pi/4 DQPSK Low 0.826 21 Pi/4 DQPSK Middle 1.164 21 Pi/4 DQPSK High 0.760 21 8DPSK Low 1.182 21 8DPSK Middle 1.538 21 8DPSK High 1.154 21 Test plots GFSK Low Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 46 of 69 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 47 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 48 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 49 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 50 of 69 Edition：A.3 12. HOPPING CHANNEL SEPARATION 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 51 of 69 Edition：A.3 12.4 Test Result Modulation Test Channel Separation (MHz) Limit(MHz) Result GFSK Low 1.008 0.633 PASS GFSK Middle 1.000 0.633 PASS GFSK High 1.000 0.635 PASS Pi/4 DQPSK Low 1.000 0.865 PASS Pi/4 DQPSK Middle 1.000 0.863 PASS Pi/4 DQPSK High 0.998 0.849 PASS 8DPSK Low 1.000 0.833 PASS 8DPSK Middle 0.998 0.835 PASS 8DPSK High 1.004 0.838 PASS Test plots GFSK Low Channel阿 Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 52 of 69 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 53 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 54 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 55 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 56 of 69 Edition：A.3 13. NUMBER OF HOPPING FREQUENCY 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 57 of 69 Edition：A.3 13.4 Test Result Test Plots: 79 Channels in total GFSK Pi/4 DQPSK Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 58 of 69 Edition：A.3 8DPSK Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 59 of 69 Edition：A.3 14. DWELL TIME 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 14.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set spectrum analyzer span = 0. Centred on a hopping channel; 3. Set RBW = 1MHz and VBW = 3MHz.Sweep = as necessary to capture the entire dwell time per hopping channel. Set the EUT for DH5, DH3 and DH1 packet transmitting. 4. Use the marker-delta function to determine the dwell time. If this value varies with different modes of operation (e.g.. data rate. modulation format. etc.). repeat this test for each vari…

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Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 67 of 70 Edition：A.3 17. EUT TEST SETUP PHOTOGRAPHS Conducted emissions Radiated Measurement Photos Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 68 of 70 Edition：A.3 Left Report No.: BCTC2103934387E No.：BCTC/RF-EMC-005 Page 69 of 70 Edition：A.3 Right