2ABTKSC300ISwing Caddie

Date : Oct. 01, 2012 Rev : 2.0 HACS-F004 FCC Agent Authorization Letter HCT America LLC ([email protected]) 44946 Osgood Rd, Fremont, CA 94539, USA TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC FCC Agent Authorization Letter Date : Oct. 01, 2012 Rev : 2.0 HACS-F004 FCC Agent Authorization Letter HCT America LLC ([email protected]) 44946 Osgood Rd, Fremont, CA 94539, USA TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 2 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC REVISION TABLE Rev Description of Change Date Approved 1.0 Original Release(Obsolete) 06/28/2012 QM 2.0 Updated template 10/01/2012 QM VC Inc. HACS-F004 FCC Agent Authorization Letter Rev : 2.0 DATE : Oct 19, 2020 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To whom it may concern: Subject : FCC Agenct Authorization Letter for FCC ID : 2ABTKSC300I We, the undersigned, hereby authorize HCT Co. Ltd. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by HCT Co., Ltd on our behalf shall have the same effect as acts of our own. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). We recognize that we are still responsible for the terms and conditions outlined in the HCT America Client Services Agreement. This authorization is valid until further written notice from the applicant. Sincerely, Signed by: Company Name : VC Inc. Company Address : 3F-4F, Hwawon Building, 417, Nonhyeon-ro, Gangnam-gu, Seoul, Republic of Korea Contact Person Name/Title : Choongjin LEE / Principal Research Engineer

Date : Jan. 10, 2014 Rev : 2.1 HACS-F003 FCC Confidentiality Request Letter HCT America LLC ([email protected]) 44364 S. Grimmer Blvd. Fremont, CA 94538 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC FCC Confidentiality Request Letter Date : Jan. 10, 2014 Rev : 2.1 HACS-F003 FCC Confidentiality Request Letter HCT America LLC ([email protected]) 44364 S. Grimmer Blvd. Fremont, CA 94538 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 2 of 2 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT America LLC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT America LLC REVISION TABLE Rev Description of Change Date Approved 1.0 Original Release(Obsolete) 06/14/2012 QM 2.0 Updated template(Obsolete) 10/01/2012 QM 2.1 Updated address 01/10/2014 QM VC Inc. HACS-F003 FCC Confidentiality Request Letter Rev : 2.1 DATE : Oct 19, 2020 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD SUBJECT : Request for Confidentiality for FCC ID : 2ABTKSC300I We hereby request confidential treatment of the information accompanying this application as outlined below: LONG-TERM AND SHORT-TERM CONFIDENTIAL LIST LONG-TERM CONFIDENTIAL Exhibit Description 1 Block Diagram 2 Schematics 3 Operational Description 4 Part Location & PCB Layout SHORT-TERM CONFIDENTIAL (180 DAYS) 5 External Photos 6 Internal Photos 7 Test-Setup Photos 8 User’s Manual 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 & 0.459 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, Signed by: Company Name : VC Inc. Company Address : 3F-4F, Hwawon Building, 417, Nonhyeon-ro, Gangnam-gu, Seoul, Republic of Korea Contact Person Name/Title : Choongjin LEE / Principal Research Engineer

FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １ of 10 EXTERNAL PHOTOGRAPHS FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ３ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ４ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ５ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ６ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ７ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ８ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ９ of 10 ■ EXTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １０ of 10 ■ EXTERNAL PHOTO

Label Location The label will be attached to the back of the product.

FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page １ of 9 INTERNAL PHOTOGRAPHS FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ２ of 9 ■ INTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ３ of 9 ■ INTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ４ of 9 ■ INTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ５ of 9 ■ INTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ６ of 9 ■ INTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ７ of 9 ■ INTERNAL PHOTO FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ８ of 9 ■ Antenna INTERNAL PHOTO(24 GHz Radar) ANT FCC ID: 2ABTKSC300I HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383, Rep. of KOREA TEL : + 82 31 645 6300 FAX : + 82 31 645 6401 www.hct.co.kr Page ９ of 9 ■ Antenna INTERNAL PHOTO(BT LE) ANT

TEST REPORT FCC MPE Test for SC300i Certification APPLICANT VC Inc. REPORT NO. HCT-RF-2010-FC002 DATE OF ISSUE October 14, 2020 Tested by Jeong Ho Kim Technical Manager Kwon Jeong HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 F ax. +82 31 645 6401 F-TP22-03 (Rev. 03) Page 2 of 6 HCT Co., Ltd. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 Fax. +82 31 645 6401 TEST REPORT FCC MPE Test for SC300i REPORT NO. HCT-RF-2010-FC002 DATE OF ISSUE October 14, 2020 Additional Model - A pplicantVC Inc. 3F-4F, Hwawon Building, 417, Nonhyeon-ro, Gangnam- gu, Seoul, Republic of Korea Eut Type Model Name Swing Caddie SC300i FCC ID2ABTKSC300I The result shown in this test report refer only to the sample(s) tested unless otherwise stated. This test results were applied only to the test methods required by the standard. Report No. HCT-RF-2010-FC002 F-TP22-03 (Rev. 03) Page 3 of 6 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 October 14, 2020 Initial Release Engineering Statement: The measurements shown in this report were made in accordance with the procedures indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurements made, the equipment tested is capable of operation in accordance with the requirements of the FCC Rules under normal use and maintenance * The report shall not be reproduced except in full(only partly) without approval of the laboratory. Report No. HCT-RF-2010-FC002 F-TP22-03 (Rev. 03) Page 4 of 6 RF Exposure Statement 1. Limit According to §1.1310, §2.1091 RF exposure is calculated. (B) Limits for General Population/Uncontrolled Exposures Frequency range (MHz) Electric field Strength (V/m) Magnetic field Strength (A/m) Power density (mW/cm²) Averaging time (minutes) 0.3 - 1.34 1.34 - 30 30 - 300 300 - 1500 1500 - 100.000 614 824/f 27.5 ... ... 1.63 2.19/f 0.073 ... ... *(100) *(180/ f²) 0.2 f/1500 1.0 30 30 30 30 30 F = frequency in MHz * = Plane-wave equivalent power density 2. Maximum Permissible Exposure Prediction Prediction of MPE limit at a given distance ଶ S = Power density P = Power input to antenna G = Power gain to the antenna in the direction of interest relative to an isotropic radiator R = Distance to the center of radiation of the antenna Report No. HCT-RF-2010-FC002 F-TP22-03 (Rev. 03) Page 5 of 6 3. RESULTS BT LE Max. average output power at antenna input terminal -4.000 dBm Max. average output power at antenna input terminal 0.398 mW Prediction distance 20.000 cm Prediction frequency 2402.00 MHz Antenna Gain(typical) 1.800 dBi Antenna Gain(numeric) 1.514 - Power density at prediction frequency( S) 0.0001 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 24GHz Radar Max. average output power at antenna input terminal -8.850 dBm Max. average output power at antenna input terminal 0.130 mW Prediction distance 20.000 cm Prediction frequency 24075 - 24175 MHz Antenna Gain(typical) 8.600 dBi Antenna Gain(numeric) 7.244 - Power density at prediction frequency( S) 0.0002 mW/cm 2 MPE limit for uncontrolled exposure at prediction frequency 1.0000 mW/cm 2 Report No. HCT-RF-2010-FC002 F-TP22-03 (Rev. 03) Page 6 of 6 Simultaneous transmission operations 1. The power density level at 20 cm is 0.0001 mW/cm², which is below the uncontrolled exposure limit of 1.0 mW/cm² at Bluetooth. 2. The power density level at 20 cm is 0.0002 mW/cm², which is below the uncontrolled exposure limit of 1.0 mW/cm² at Radar. ->Simultaneous MPE 20 cm is Radar (0.0002/1.0) + Bluetooth (0.0001/1.0) = 0.0003 < 1 *Note: 1. Providing actual use conditions, even though this device is battery powered and can be handheld.

TEST REPORT FCC BT LE Test for SC300i Certification APPLICANT VC Inc. REPORT NO. HCT-RF-2010-FC001 DATE OF ISSUE October 14, 2020 Tested by Jeong Ho Kim Technical Manager Kwon Jeong HCT CO., LTD. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 F ax. +82 31 645 6401 F-TP22-03 (Rev. 03) Page 2 of 90 HCT Co., Ltd. 74, Seoicheon-ro 578beon-gil, Majang-myeon, Icheon-si, Gyeonggi-do, 17383 KOREA Tel. +82 31 634 6300 Fax. +82 31 645 6401 TEST REPORT FCC BT LE Test for SC300i REPORT NO. HCT-RF-2010-FC001 DATE OF ISSUE October 14, 2020 Additional Model - A pplicantVC Inc. 3F-4F, Hwawon Building, 417, Nonhyeon-ro, Gangnam- gu, Seoul, Republic of Korea Eut Type Model Name Swing Caddie SC300i FCC ID2ABTKSC300I Max. RF Output Power -4.529 dBm (0.352 mW) Modulation typeGFSK FCC ClassificationDigital Transmission System(DTS) FCC Rule Part(s) Part 15.247 The result shown in this test report refer only to the sample(s) tested unless otherwise stated. This test results were applied only to the test methods required by the standard. Report No. HCT-RF-2010-FC001 F-TP22-03 (Rev. 03) Page 3 of 90 REVISION HISTORY The revision history for this test report is shown in table. Revision No. Date of Issue Description 0 October 14, 2020 Initial Release Engineering Statement: The measurements shown in this report were made in accordance with the procedures indicated, and the emissions from this equipment were found to be within the limits applicable. I assume full responsibility for the accuracy and completeness of these measurements, and for the qualifications of all persons taking them. It is further stated that upon the basis of the measurements made, the equipment tested is capable of operation in accordance with the requirements of the FCC Rules under normal use and maintenance. * The report shall not be reproduced except in full(only partly) without approval of the laboratory. Report No. HCT-RF-2010-FC001 F-TP22-03 (Rev. 03) Page 4 of 90 CONTENTS 1. EUT DESCRIPTION 5 2. TEST METHODOLOGY 6 EUT CONFIGURATION 6 EUT EXERCISE 6 GENERAL TEST PROCEDURES 6 DESCRIPTION OF TEST MODES 7 3. INSTRUMENT CALIBRATION 7 4. FACILITIES AND ACCREDITATIONS 7 FACILITIES 7 EQUIPMENT 7 5. ANTENNA REQUIREMENTS 8 6. MEASUREMENT UNCERTAINTY 8 7. DESCRIPTION OF TESTS 9 8. SUMMARY TEST OF RESULTS 24 9. TEST RESULT 25 9.1 DUTY CYCLE 25 9.2 6dB BANDWIDTH 29 9.3 OUTPUT POWER 36 9.4 POWER SPECTRAL DENSITY 38 9.5 BAND EDGE/ CONDUCTED SPURIOUS EMISSIONS 41 9.6 RADIATED SPURIOUS EMISSIONS 66 9.7 RADIATED RESTRICTED BAND EDGES 80 9.8 POWERLINE CONDUCTED EMISSIONS 84 10. LIST OF TEST EQUIPMENT 88 11. ANNEX A_ TEST SETUP PHOTO 90 Report No. HCT-RF-2010-FC001 F-TP22-03 (Rev. 03) Page 5 of 90 1. EUT DESCRIPTION Model SC300i Additional Model - EUT Type Swing Caddie Power Supply DC 3.70 V AC Adapter Information Model : ETA-U90KBK Serial Number: RT6F709pS/B-E Manufacture: RF Tech Electronics Co.,Ltd Frequency Range 2402 MHz - 2480 MHz Max. RF Output Power Peak 250k Bit/s : -4.549 dBm (0.351 mW) 1M Bit/s : -4.543 dBm (0.351 mW) 2M Bit/s : -4.529 dBm (0.352 mW) Average 250k Bit/s : -4.94 dBm (0.321 mW) 1M Bit/s : -4.97 dBm (0.318 mW) 2M Bit/s : -4.72 dBm (0.337 mW) Modulation Type GFSK Bluetooth Version 5.0 Number of Channels 40 Channels Antenna type Dielectric Chip Antenna Antenna Peak Gain 1.8 dBi Date(s) of Tests September 03, 2020 ~ October 14, 2020 EUT serial numbers SC300B2002955 Report No. HCT-RF-2010-FC001 F-TP22-03 (Rev. 03) Page 6 of 90 2. TEST METHODOLOGY FCC KDB 558074 D01 15.247 Meas Guidance v05r02 dated April 02, 2019 entitled ˑguidance for compliance measurements on digital transmission system, frequency hopping spread spectrum system, and hybrid system devices and the measurement procedure described in ANSI C63.10(Version : 2013) ˎthe American National Standard of Procedures for Compliance Testing of Unlicensed Wireless Devicesˏ. EUT CONFIGURATION The EUT configuration for testing is installed on RF field strength measurement to meet the Commissions requirement and operating in a manner that intends to maximize its emission characteristics in a continuous normal application. EUT EXERCISE The EUT was operated in the engineering mode to fix the Tx frequency that was for the purpse of the measurements. According to its specifications, the EUT must comply with the requirements of the Section 15.207, 15.209 and 15.247 under the FCC Rules Part 15 Subpart C. GENERAL TEST PROCEDURES Conducted Emissions The EUT is placed on the turntable, which is 0.8 m above ground plane. According to the requirements in Section 6.2 of ANSI C63.10. (Version :2013) Conducted emissions from the EUT measured in the frequency range between 0.15 MHz and 30MHz using CISPR Quasi-peak and average detector modes. Radiated Emissions The EUT is placed on a turn table, which is 0.8 m above ground plane below 1GHz. Above 1GHz with 1.5m using absorbers between the EUT and receive antenna. The turntable shall rotate 360 degrees to determine the position of maximum emission level. EUT is set 3 m away from the receiving antenna, which varied from 1 m to 4 m to find out the highest emission. And also, each emission was to be maximized by changing the polarization of receiving antenna both horizontal and vertical. In order to find out the max. emission, the relative positions of this hand-held transmitter (EUT) was rotated through three orthogonal axes according to the requirements in Section 6.6.5 of ANSI C63.10. (Version: 2013) Report No. HCT-RF-2010-FC001 F-TP22-03 (Rev. 03) Page 7 of 90 DESCRIPTION OF TEST MODES The EUT has been tested under operating condition. Test program used to control the EUT for staying in continuous transmitting and receiving mode is programmed. 3. INSTRUMENT CALIBRATION The measuring equipment, which was utilized in performing the tests documented herein, has been calibrated in accordance with the manufacturer's recommendations for utilizing calibration equipmentˏs, which is traceable to recognized na…

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