2BCKX-GT4PROsmart watch

Sports smart watch Thank you for choosing our smart watch. You can read this manual to fully understand how to use the device. This device is mainly connected to the mobile phone through Bluetooth for adaptation and use. It provides a variety of practical functions and services to facilitate your operation of the mobile phone. Human movement and health functions. The company reserves the right to modify the contents of this manual without any prior notice without notice This product supports IP68 waterproof, the application scenario supports rain, hand washing and other daily waterproof, swimming is not recommended to wear, hot shower or sauna, etc., can not prevent water vapor. If the watch is damaged due to water ingress due to failure to follow the instructions, our company will not provide free warranty. Operating instructions: Side button function： 1. Up button: Function button: Single press to enter Gypsophila; when in other application interface, single press to return to the upper level interface; Double-press to switch menu style on menu interface; 2. Down button: long press to switch the machine; single press on the dial interface to turn on and off the screen, other interfaces return to the dial interface with one key; Touch gesture: Double-click on the dial interface to enter the SIRI interface; swipe left to switch to the component interface; swipe right to enter the split-screen UI; swipe down to enter the control center; swipe up to enter information; after entering each function, swipe right to return. Dial switch: The rotary encoder switches the dial. Strap replacement: Pull forward with one hand, and push forward with the other hand at the same time, the strap can be easily disassembled; Connection between watch and mobile phone: First, the mobile phone must download the APP " RDFit " to the mobile phone and install it in two ways。 1.IOS/Android phone user： Scan the QR code below through the mobile browser, or scan it with WeChat. When the interface is opened, click the Android/iOS download option and choose to open the download with the mobile browser. The QR code in the figure below is the RDFit APP download Android/iOS 2 Warranty description: 1. During normal use of this product, if there are product quality problems caused by manufacturing, material, design and other reasons, the motherboard will be guaranteed for free within one year, and the battery and charger will be guaranteed for half a year from the date of purchase. 2. Free warranty is not provided for failures caused by users, as follows: 1）Failure caused by unauthorized disassembly or modification of the watch. 2）Failure caused by accidental fall during use. 3）All man-made damage or misuse due to the fault of a third party (such as: water in the main unit, external force cracking, damage to the scratches of peripheral components, etc.) are not covered by the warranty. 3. When requesting free warranty, please provide the warranty card with the date of purchase and the stamp of the place of purchase. 4. When the user repairs the product, please take the product to our company or our company's sales office. 5. All functions of the product are based on physical objects. Attention: 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。

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BCKX-GT4PRO GT4PRO, IW9, IW9MINI, IW9ULTRA, IW9MAX DK66, IW9ULTRA MAX, DK66, DK67, DK68, IW10, IW10 ULTRA, IW10 ULTRAMAX, M10, M11, M12 We, applicant Company Name: Shenzhen Daiku Technology Co., Ltd. Address: 605-606, Building E, Longjing Science Park, No.339 Bulong Road, Longgang District, Shenzhen Phone: 18682236302 certify that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. We certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2023-08-25 Signature Date Printed Name of Signee: zhangjiali Company: Shenzhen Daiku Technology Co., Ltd. Address: 605-606, Building E, Longjing Science Park, No.339 Bulong Road, Longgang District, Shenzhen Phone: 18682236302 Email: [email protected]

CPSC2023-V08-0101 Page 1 《USAgentAgreement》NO.CPSC2023-V08-0101 PartyA:ShenzhenDaikuTechnologyCo.,Ltd. Add:605-606,BuildingE,LongjingSciencePark,No.339BulongRoad, LonggangDistrict,Shenzhen ContactPerson ： MrZhang Tel:18682236302Fax:/ E-mail:[email protected] PartyB:GSSSERVICEINC Add:6547NAcademyBlvd#2266ColoradoSpringsCo80918USA ContactPerson：MichouxLogan Tel:001-949-2990192or001-515-7158284Fax:001-949-2990192 E-mail:[email protected] PartyAherebyappointsPartyBasUnitedStatesAgentandPartyBacceptsthe appointmenttobetheauthorizedUnitedStatesAgentforPartyAinthemarketof UnitedStates.Bothpartiesenterthisagreementasfollow: PartyA 1.PartyAassurestoprovidetheirupdatedproductlistofallproductswhicharesold inUnitedStatesmarkettoPartyB. 2.Ifthereareanychangesofproducts,orPartyA‘simportantinformation(e.g. address,telephonenumber,faxnumber,email,contactperson),partyAshall notifypartyBatonce. 3.PartyA‘sproductsthatareimportedorofferedforimportintotheUnitedStates.It shouldbedealtwithintime 4.PartyAshallberesponsibleforanybusinessdisputesuchasclaimfor compensationcausedbymedicalaccidentaftersale,Itdependsonthespecific situation,partyBshallhandlethedisputeinaccordancewiththeauthorizationof partyA.AlltheexpenseswhichshouldbeconfirmedbypartyAoccurredduring thepartyB'shandlingoftheaccidentshallbebornebypartyA. 5．AfterreceivingtheinspectionschedulingrequirementfromAMAZONCPSC, PartyAshallaccordingtoAMAZONCPSC’srequirements,presentthe inspectionScheduletobepassedontoAMAZONCPSCforreviewand confirmationwithin3businessdays. PartyB A. 1.PartyBshallberesponsibleforassistingAMAZONCPSCincommunications withPartyAintime. 2.PartyBshallassistingAMAZONCPSCinschedulinginspectionsofPartyA. 3.PartyBshallretainallinformationsuppliedbyPartyAandtakeupthe responsibilityofconfidentiality. 4.PartyBshallnotifyanyinformationabouttheproductsofPartyAsoldinUnited Statesincludingcustomer’scomplaintsandanyinformationfromcompetitors. 5.PartyBasUnitedStatesAgent,onlyusedforamazone-commerceplatform review,doesnotincludecustomerproductsalesclearanceprocessingandany otheritems B.Absentaseparateagreementtothecontrary,AgentshallNOT: 1.ProvideanylegaladviceonanymattersofconflictwithAMAZONCPSCor adviseCompanyonissuesofcompliancewithAMAZONCPSCQualitySystem CPSC2023-V08-0101 Page 2 Regulationssuchasinthedesign,manufacture,packaging,labeling,storage, installation,servicingandrecordskeeping,etc. 2.ProvideanyservicesrelativetothetranslationofPartyA'sproductsinformation suchaswrittenmaterialoftheproducts,manufacturingprocedures,qualitycontrol system,etc.exceptasnecessarytofacilitatecommunicationsbetweenthe AMAZONCPSCandPartyAonthesematters. (productsnameandcategoryforAMAZONCPSCregistration)： Asagreedbybothparties,thisagreementwillbevalidfor1years,from01/08/2023 to30/07/2024.Thevalidtermofthisagreementcanbealsodeterminedseparately. PartyAandPartyBhasnootherrightsandobligationsthanthisagreement. PartyA:ShenzhenDaikuTechnologyCo.,Ltd. (Signatureanddate) PartyB:GSSSERVICEINC (Signatureanddate） No.ProductsnameModelNo. 1smartwatch GT4PRO,IW9,IW9MINI, IW9ULTRA,IW9MAXDK66, IW9ULTRAMAX,DK66,DK67, DK68,IW10,IW10ULTRA, IW10ULTRAMAX,M10,M11, M12

Local Representative Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(7), of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BCKX-GT4PRO GT4PRO, IW9, IW9MINI, IW9ULTRA, IW9MAX DK66, IW9ULTRA MAX, DK66, DK67, DK68, IW10, IW10 ULTRA, IW10 ULTRAMAX, M10, M11, M12 We hereby acknowledge as follows: i. both signees confirm that the point of contact accepts responsibility to act as a US- American Representative on behalf of the applicant ii. the point of contact provides the physical U.S. address and email as listed below iii. both parties maintain the requirements of this agreement for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. US-American Point of Contact Applicant/Approval Holder Company Name: GSS SERVICE INC Shenzhen Daiku Technology Co., Ltd. FRN: 0033500653 0033896796 Contact Name: Michoux Logan Zhangjiali Address: 6547 N Academy Blvd #2266 Colorado Springs Co 80918 USA 605-606, Building E, Longjing Science Park, No.339 Bulong Road, Longgang District, Shenzhen Phone: 001-949-2990192 or 001-515- 7158284 18682236302 Email: [email protected] [email protected]

Ningbo Jiufeng Electrical Appliance Co., Ltd. Huangbo Industrial Disrict, Chunhu Town, Fenghua Ningbo Zhejiang.People's Republic of China Declaration Letter Date: Aug.25,2023 To: Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: For our business issue and marketing requirement, we would like to list different model number on the FCC certificates and reports, as following: FCC ID: 2BCKX-GT4PRO Model Number: GT4PRO, IW9, IW9MINI, IW9ULTRA, IW9MAX DK66, IW9ULTRA MAX, DK66, DK67, DK68, IW10, IW10 ULTRA, IW10 ULTRAMAX, M10, M11, M12 Model Difference: The difference between models is for different market sale, the other (hardware and software) was the same as before. Sincerely, Name / Title zhangjiali/Manager Company Name Shenzhen Daiku Technology Co., Ltd. Company Address 605-606, Building E, Longjing Science Park, No.339 Bulong Road, Longgang District, Shenzhen Tel: 18682236302 Fax: Email: [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BCKX-GT4PRO GT4PRO, IW9, IW9MINI, IW9ULTRA, IW9MAX DK66, IW9ULTRA MAX, DK66, DK67, DK68, IW10, IW10 ULTRA, IW10 ULTRAMAX, M10, M11, M12 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2023-08-25 Signature Date Printed Name of Signee: zhangjiali Company: Shenzhen Daiku Technology Co., Ltd. Address: 605-606, Building E, Longjing Science Park, No.339 Bulong Road, Longgang District, Shenzhen Phone: 18682236302 Email: [email protected]

External Photographs FCC ID: 2BCKX-GT4PRO

Label Sample for FCC ID: 2BCKX-GT4PRO FCC ID: 2BCKX-GT4PRO 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. Size for the label: Product Name : smart watch Model : GT4PRO FCC ID :2BCKX-GT4PRO

Internal photographs FCC ID: 2BCKX-GT4PRO Antenna

Radio frequency radiation exposure evaluation: portable devices 1.1 Radio Frequency Exposure Compliance 1.1.1 Electromagnetic Fields RESULT: Pass Test Specification Test item : smart watch Identification / Type No. : GT4PRO FCC ID : 2BCKX-GT4PRO Test standard : CFR47 FCC Part 2: Section 2.1093 FCC KDB Publication 447498 v06 Measurement Record: EIRP[dBm] = maximum peak output + antenna Gain = -0.05dBm + 1.49dBi =1.44dBm Since maximum peak output power of the transmitter is 1.44 dBm ≈1.39mW < 10mW. Hence the EUT is excluded from SAR evaluation according to FCC KDB Publication 447498 D01 General RF Exposure Guidance v06.

BSL Testing Co.,LTD. Report No.: BSL230851897802RF Report No.: BSL230851897802RF Page 1 of 31 FCC Part 15.247 FCC Part 15C Measurement and Test Report For Shenzhen Daiku Technology Co., Ltd. FCC ID: 2BCKX-GT4PRO FCC Rule(s): FCC Part 15.247 Product Description: smart watch Tested Model: GT4PRO Report No.: BSL230851897801RF Tested Date: Aug. 1~22, 2023 Issued Date: Aug. 22, 2023 Tested By: Lris Yao / Engineer Reviewed By: Levi Xiao / EMC Manager Approved & Authorized By: Salon Ouyang / PSQ Manager Prepared By: BSL Testing Co.,LTD. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, ShiyanStreet, Bao'an District, Shenzhen,Guangdong,518052,People’s Republic of China Tel: 400-882-9628 Fax: 86- 755-26508703 BSL Testing Co.,LTD. Report No.: BSL230851897802RF Report No.: BSL230851897802RF Page 2 of 31 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ....................................................................................................................................... 3 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .................................................................................. 3 1.2 TEST STANDARDS ....................................................................................................................................................... 4 1.3 TEST METHODOLOGY ................................................................................................................................................. 4 1.4 TEST FACILITY ........................................................................................................................................................... 4 1.5 EUT SETUP AND TEST MODE ..................................................................................................................................... 5 1.6 MEASUREMENT UNCERTAINTY .................................................................................................................................. 5 1.7 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 6 2. SUMMARY OF TEST RESULTS ............................................................................................................................... 7 3. RF EXPOSURE ............................................................................................................................................................. 8 3.1 STANDARD APPLICABLE ............................................................................................................................................. 8 3.2 TEST RESULT .............................................................................................................................................................. 8 4. ANTENNA REQUIREMENT ...................................................................................................................................... 9 4.1 STANDARD APPLICABLE ............................................................................................................................................. 9 4.2 EVALUATION INFORMATION ....................................................................................................................................... 9 5. POWER SPECTRAL DENSITY ............................................................................................................................... 10 5.1 STANDARD APPLICABLE ........................................................................................................................................... 10 5.2 TEST PROCEDURE ..................................................................................................................................................... 10 5.3 ENVIRONMENTAL CONDITIONS ................................................................................................................................ 10 5.4 SUMMARY OF TEST RESULTS/PLOTS ........................................................................................................................ 10 6. 6DB BANDWIDTH ..................................................................................................................................................... 13 6.1 STANDARD APPLICABLE ........................................................................................................................................... 13 6.2 TEST PROCEDURE ..................................................................................................................................................... 13 6.3 ENVIRONMENTAL CONDITIONS ................................................................................................................................ 13 6.4 SUMMARY OF TEST RESULTS/PLOTS ........................................................................................................................ 13 7. RF OUTPUT POWER ................................................................................................................................................ 16 7.1 STANDARD APPLICABLE ........................................................................................................................................... 16 7.2 TEST PROCEDURE ..................................................................................................................................................... 16 7.3 ENVIRONMENTAL CONDITIONS ................................................................................................................................ 16 7.4 SUMMARY OF TEST RESULTS/PLOTS ........................................................................................................................ 16 8. FIELD STRENGTH OF SPURIOUS EMISSIONS ................................................................................................. 17 8.1 STANDARD APPLICABLE ...........................…

Text truncated - open the document above for the full version.

1 Shenzhen Daiku Technology Co., Ltd. Antenna SPECIFICATION Product picture: Specifications: Item Specification type copper core length 20mm diameter 0.65mm Frequency Range 2.4-2.5GHZ Gain 1.49dBi Antenna Model GT4PRO Technical parameter diagram for passive test: Address : 605-606, Building E, Longjing Science Park, No.339 Bulong Road, Longgang District, Shenzhen

Test Setup Photos FCC ID: 2BCKX-GT4PRO