2BVI3-618Bluetooth watch

HOT FOCUS,INC * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2BVI3-618 FRN of applicant: 0038249181 Per section 2.911(d)(7) of the FCC rules, HOT FOCUS, INC certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: HOT FOCUS, INC FCC Registration Number (FRN): 0038249181 Physical U.S. Company Address: 4471 State St., Montclair, California 91763, United States Contact Person: Tiffany Lo Agent Email Address: [email protected] Telephone No: +1-909-391-3818 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent 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. Applicant Signed: Signed: Printed name: Tiffany Lo Title: Manager Company Name: HOT FOCUS, INC Date: 4/16/2026 Agent Signed: Signed: Printed name: Tiffany Lo Title: Manager Company Name: HOT FOCUS, INC Date: 4/16/2026

HOT FOCUS,INC Section 2.911(d)(5)(i) Certification – Equipment Type Company name: HOT FOCUS, INC Address: 4471 State St., Montclair, California 91763, United States Product Name: Bluetooth watch FCC ID: 2BVI3-618 Model(s): 618 2.911(d)(5)(i) Equipment Type We, [HOT FOCUS, INC] certify that the equipment for which authorization is sought through certification is not: • Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules. • Identified as an equipment type in the “Covered List” NOTE 1 Yo u r s s i n c e r e l y, Signature: Name: Tiffany Lo Date: 2026-04-16 Title and Company name: Manager and HOT FOCUS,INC NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the 618BT, 618GC, 618SW

HOT FOCUS,INC Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: HOT FOCUS, INC Address: 4471 State St., Montclair, California 91763, United States Product Name: Bluetooth watch FCC ID: 2BVI3-618 Model(s): 618 2.911(d)(5)(ii) Applicant filing We, [HOT FOCUS, INC] certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 , established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yo u r s s i n c e r e l y, Signature: Name: Tiffany Lo Date: 2026-04-16 Title and Company name: Manager and HOT FOCUS, INC NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the 618BT, 618GC, 618SW

Differences Declaration To whom concern, We company HOT FOCUS,INC hereby declares: The product models 618BT, 618GC, 618SW are identical in the same PCB layout, interior structure and electrical circuits, The differences are appearance color and model name for commercial purpose. Authorized signature: Date: 2026-04-17

HOT FOCUS,INC Agent Authorization Company: HOT FOCUS,INC Address: 4471 State St., Montclair, California 91763, United States Product Name: Bluetooth watch Model Number(s): 618 We 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: 2026-04-16 Name: Tiffany Lo Title: Manager Company: HOT FOCUS,INC 618BT, 618GC, 618SW

HOT FOCUS,INC Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-04-16 Subject; Request for Confidentiality FCC ID: 2BVI3-618 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 Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. 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: Tiffany Lo Title: Manager 4/17/2026

FCC ID: 2BVI3-618 RF Exposure evaluation According to 447498 D04 Interim General RF Exposure Guidance v01 ERP/EIRP = P T +G T −L C ERP/EIRP is the equivalent (or effective) radiated power [in same units as P T , typically dBW, dBm, or power spectral density (psd)], relative to either a dipole antenna (ERP) or an isotropic antenna (EIRP). P T is the transmitter output power, in dBW, dBm, or psd (power over a specified reference bandwidth). G T is the gain of the transmitting antenna, in dBd (ERP) or dBi (EIRP). L C is the signal attenuation in the connecting cable between the transmitter and the antenna, in dB. Band Frequency (MHz) Output power (dBm) Output power (mW) Ant gain (dBi) EIRP (dBm) EIRP (mW) ERP (dBm) ERP (mw) Distance (cm) P th (mW) BT EDR 2480 2.46 1.76 -1.17 1.29 1.35 -0.86 0.82 0.5 2.7 BLE 2480 0.89 1.23 -1.17 -0.28 0.94 -2.43 0.57 0.5 2.7 Remark: ERP = EIRP−2.15dB Then SAR evaluation is not required

Global United Technology Services Co., Ltd. Report No.: GTS2026030329F02 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 33 TEST REPORT Applicant: HOT FOCUS,INC Address of Applicant: 4471 State St., Montclair, California 91763, United States Manufacturer: HOT FOCUS,INC Address of Manufacturer: 4471 State St., Montclair, California 91763, United States Equipment Under Test (EUT) Product Name: Bluetooth watch Model No.: 618BT, 618GC, 618SW Trade Mark: Hot Focus FCC ID: 2BVI3-618 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: March 24, 2026 Date of Test: March 25, 2026-April 10, 2026 Date of report issued: April 16, 2026 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 33 2 Version Version No. Date Description 00 April 16, 2026 Original Tested By: Date: April 16, 2026 Test Engineer Prepared By: Date: April 16, 2026 Project Engineer Check By: Date: April 16, 2026 Reviewer Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 33 3 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 VERSION ...................................................................................................................................................2 3 CONTENTS ...............................................................................................................................................3 4 TEST SUMMARY ......................................................................................................................................4 5 GENERAL INFORMATION .......................................................................................................................5 5.1 GENERAL DESCRIPTION OF EUT ..........................................................................................................5 5.2 TEST MODE .........................................................................................................................................7 5.3 DESCRIPTION OF SUPPORT UNITS ........................................................................................................7 5.4 DEVIATION FROM STANDARDS ..............................................................................................................7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ....................................................................................7 5.6 TEST FACILITY ....................................................................................................................................7 5.7 TEST LOCATION ..................................................................................................................................7 5.8 ADDITIONAL INSTRUCTIONS ..................................................................................................................7 6 TEST INSTRUMENTS LIST ......................................................................................................................8 7 TEST RESULTS AND MEASUREMENT DATA .....................................................................................10 7.1 ANTENNA REQUIREMENT ....................................................................................................................10 7.2 CONDUCTED EMISSIONS ....................................................................................................................11 7.3 CONDUCTED OUTPUT POWER ............................................................................................................14 7.4 CHANNEL BANDWIDTH .......................................................................................................................15 7.5 POWER SPECTRAL DENSITY ..............................................................................................................16 7.6 SPURIOUS EMISSION IN NON-RESTRICTED & RESTRICTED BANDS ........................................................17 7.6.1 Conducted Emission Method ......................................................................................................17 7.6.2 Radiated Emission Method .........................................................................................................18 8 TEST SETUP PHOTO .............................................................................................................................33 9 EUT CONSTRUCTIONAL DETAILS .......................................................................................................33 Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 33 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203/15.247 (c) Pass AC Power Line Conducted Emission 15.207 Pass Conducted Output Power 15.247 (b)(3) Pass Channel Bandwidth 15.247 (a)(2) Pass Power Spectral Density 15.247 (e) Pass …

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Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 8 AppendixA: DTS Bandwidth Test Result Test Mode Antenna Frequency[MHz] DTS BW [MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.6642 0.5 PASS BLE_1M Ant1 2440 0.6613 0.5 PASS BLE_1M Ant1 2480 0.6708 0.5 PASS Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 8 AppendixB: Occupied Channel Bandwidth Test Result Test Mode Antenna Frequency[MHz] OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 1.0110 2401.4755 2402.4865 --- --- BLE_1M Ant1 2440 1.0188 2439.4695 2440.4883 --- --- BLE_1M Ant1 2480 1.0134 2479.4734 2480.4868 --- --- Test Graphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 BLE_1M-Ant1-2480 Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 8 AppendixC: Maximum conducted output power Test Result Peak Test Mode Antenna Frequency[MHz] Conducted Peak Power[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 -0.60 ≤30 PASS BLE_1M Ant1 2440 0.15 ≤30 PASS BLE_1M Ant1 2480 0.89 ≤30 PASS Test Graphs Peak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 8 AppendixD: Maximum power spectral density Test Result Test Mode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -16.77 ≤8.00 PASS BLE_1M Ant1 2440 -16.12 ≤8.00 PASS BLE_1M Ant1 2480 -15.33 ≤8.00 PASS Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 5 of 8 AppendixE:Band edge measurements Test Result Test Mode Antenna ChName Frequency[MHz] RefLevel[dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 Low 2402 -1.34 -45.97 ≤-21.34 PASS BLE_1M Ant1 High 2480 0.16 -47.28 ≤-19.84 PASS Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 6 of 8 AppendixF:Conducted Spurious Emission Test Result Test Mode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 0~Reference -1.36 -1.36 --- PASS BLE_1M Ant1 2402 30~1000 -1.36 -62.46 ≤-21.36 PASS BLE_1M Ant1 2402 1000~26500 -1.36 -36.2 ≤-21.36 PASS BLE_1M Ant1 2440 0~Reference -0.56 -0.56 --- PASS BLE_1M Ant1 2440 30~1000 -0.56 -61.95 ≤-20.56 PASS BLE_1M Ant1 2440 1000~26500 -0.56 -34.81 ≤-20.56 PASS BLE_1M Ant1 2480 0~Reference 0.18 0.18 --- PASS BLE_1M Ant1 2480 30~1000 0.18 -61.52 ≤-19.82 PASS BLE_1M Ant1 2480 1000~26500 0.18 -33.94 ≤-19.82 PASS Test Graphs BLE_1M-Ant1-2402-0~Reference-PASS BLE_1M-Ant1-2402-30~1000-PASS BLE_1M-Ant1-2402-1000~26500-PASS BLE_1M-Ant1-2440-0~Reference-PASS Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 7 of 8 BLE_1M-Ant1-2440-30~1000-PASS BLE_1M-Ant1-2440-1000~26500-PASS BLE_1M-Ant1-2480-0~Reference-PASS BLE_1M-Ant1-2480-30~1000-PASS BLE_1M-Ant1-2480-1000~26500-PASS Report No.: GTS2026030329F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 8 of 8 AppendixG: Duty Cycle Test Result Test Mode Antenna Frequency[MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor[dB] BLE_1M Ant1 2402 0.41 0.62 66.13 1.80 BLE_1M Ant1 2440 0.41 0.62 66.13 1.80 BLE_1M Ant1 2480 0.41 0.62 66.13 1.80 Test Graphs NTNV-BLE_1M-Ant1-2402 NTNV-BLE_1M-Ant1-2440 NTNV-BLE_1M-Ant1-2480 ------End------

Antenna specification 1 Table of contents 2. Antenna appearance and dimensions3. Detailed information about antenna parameters 1. antenna parameters 2 1. antenna parameters 3 Frequency 2402 ～ 2480MHZ Effi AVG 40.22% PK Gain -1.17dBi SWR <3 Antenna Type On board copper Antenna polarization Linear polarizationPART NO B01 Antenna size L11.8*W0.5mm 2. Antenna appearance and dimensions 4 Antenna No.: B01; Antenna size : L11.8*W0.5mm 3. Detailed information about antenna parameters 5 Antenna Pattern: Antenna Effeciency S11 Parameters Free space Frequency (MHz) Efficiency (%) Efficiency (dBi) Gain(dBi) 2400 39.6 -5.02 -1.17 2410 40.36 -4.94 -1.29 2420 40.48 -4.93 -1.31 2430 41.32 -4.84 -1.22 2440 41.63 -4.81 -1.29 2450 40.93 -4.88 -1.33 2460 40.08 -4.97 -1.25 2470 39.19 -5.07 -1.29 2480 38.37 -5.16 -1.83 AVG 40.22 -4.96 -1.33 The End 6