S7A-SP81M1

M1 Manual Charging Red LED: Charging Blue LED: Fully charged Power On/Off Power On : Press and hold the (+) Button and Center Button for 1 second Power Off : Tap the (+) Button and Center Button. Volume Adjustment (+) Button - Increase the volume (-) Button - Decrease the volume Battery Check Phone, Music Pairing Initially Pairing the M1 The Bluetooth system will automatically enter the phone pairing mode when you initially turn on the Bluetooth system or in the following situation: • Rebooting after executing Factory Reset 1. Press and hold the Center Button and (+) Button for 1 second. 2. Search for Bluetooth devices on your mobile phone. Select the M1 in the list of the devices detected on the mobile phone. 3. Enter 0000 for the PIN. Some mobile phones may not ask for the PIN. Music Operation Play or pause music: Press the Center Button for 1 second. Track back: Press the (-) Button for 1 second. Track forward: Press the (+) Button for 1 second. Mobile Phone Call Making and Answering Answering a call: Tap the Center Button Ending a call: Press the Center Button for 2 seconds. Voice dial: Press the Center Button for 3 seconds. Speed dial: Press the (+) Button for 3 seconds. Rejecting a call: Press the (+) Button for 2 seconds. Intercom Intercom Pairing 1. Press and hold the Center Button of two headsets for 5 seconds until red LEDs of both units start to flash rapidly. 2. Simply tap the Center Button of any one of the two headsets. Intercom Start/End : Tap the Center Button Radio On/Off Turn on the FM radio: Press the (-) Button for 1 second. Turn off the FM radio: Press the (-) Button for 1 second. Radio Scan Up FM Band Start scanning: Press (+) Button for 1 second. Stop scanning: Press (+) Button for 1 second. Radio Move to Preset Station Move to next preset: Press the Center Button for 1 second (1 → 2 → ... → 10) Radio Seek Stations Seek up stations: Double tap the (+) Button. Seek down stations: Double tap the (-) Button. LED Taillight LED On and Solid -> Night Flash -> Day Flash -> LED Off : Tap the Sena Button Setting Configuration Menu: Press the Center Button for 15 seconds. Troubleshooting Factory Reset If you want to restore the headset to factory default settings, use the Factory Reset in the configuration menu. The headset automatically restores the default settings and turns off. Certification and Safety Approvals FCC Compliance Statement 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. 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 on and off, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antennae -Increase the separation between the equipment and the 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. FCC RF Exposure Statement The highest SAR value reported under this standard during product certification for use next to the head with the minimum separation distance of 0mm is 0.6W/Kg. This transmitter must not be collocated or operating in conjunction with any other antenna or transmitter. This product is compliance to FCC RF Exposure requirements and refers to FCC website https://apps.fcc.gov/oetcf/eas/reports/GenericSearch.cfm search for FCC ID: S7A-SP81, IC:8154A- SP81. FCC Caution Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void user’s authority to operate the equipment. Certification et homologation de sécurité Déclaration de conformité FCC Cet appareil est en conformité avec la partie 15 des règles de la FCC. Son fonctionnement est soumis aux deux conditions suivantes : (1) Cet appareil ne doit pas créer d’interférences préjudiciables et (2) Cet appareil doit accepter toutes les interférences reçues, y compris celles qui pourraient entraver son bon fonctionnement. Cet équipement a été testé et jugé conforme aux limites pour un appareil numérique de classe B, conformément à la partie 15 des règles de la FCC. Ces limites sont conçues pour fournir une protection raisonnable contre les interférences nuisibles dans une installation résidentielle. Cet équipement génère et utilise de l’énergie radio fréquence et, s’il n’est pas installé et utilisé conformément. aux instructions, il peut occasionner des interférences nuisibles au niveau des communications radios. Cependant, il n’existe aucune garantie que ces interférences ne se produiront pas dans une installation particulière. Si cet équipement génère des interférences nuisibles à la réception de la radio ou de la télévision (ce qu’il est possible de déterminer en mettant l’équipement hors tension, puis sous tension), l’utilisateur est invité à suivre une ou plusieurs des mesures suivantes pour corriger le problème des interférences en prenant l’une des mesures suivantes : -Modifier l’emplacement ou l’orientation de l’antenne de réception. -É loigner l’appareil du récepteur. -Brancher l’appareil sur une prise située sur un circuit différent de celui du récepteur. -Consulter le revendeur ou un tec…

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SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea SENA TECHNOLOGIES.Inc Aug 12, 2020 Federal Communications Commission Authorization and Evaluation Division Applicant: SENA TECHNOLOGIES.Inc FCC ID: S7A-SP81 Attestation for FCC Part 15B Declaration of Conformity. This device has been confirmed to be in compliance with the requirements of ANSI C63.4 & FCC part 15 regulations. The test result has been shown in the NCT test report with number NE2007-F005. And this compliance 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. Seunghyun Kim / Research Engineer

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea SENA TECHNOLOGIES.Inc Aug 12, 2020 Applicant: SENA TECHNOLOGIES.Inc FCC ID: S7A-SP81 / IC: 8154A-SP81 So, We, Sena Technologies,Inc. confirm that USB port is charging function only. Seunghyun Kim Research Engineer

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea July 24, 2020 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Letter of Authorization We, the undersigned, hereby authorize Kenneth Kim of NCT Co.,Ltd. to act on our behalf in all manners relating to application for equipment authorization for FCC ID: S7A-SP81 / IC : 8154A-SP81 including signing of all documents relating to these matters. Any and all acts carried out by Kenneth Kim of NCT Co.,Ltd. on our behalf shall have the same affect as acts of our own. This authorization is valid until further written notice from SENA TECHNOLOGIES.Inc “I, 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).” Sincerely, Seunghyun KIM / Research Engineer

SENA TECHNOLOGIES.Inc 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, South Korea Rev 11/20/07 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: S7A-SP81 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Block Diagram Schematics Operational Description Part List [SP81] BLK [SP81] SCH [SP81] OpDes [SP81] Part List 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 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. 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); Exhibit Type File Name External Photos Internal Photos Test Setup Photos Manual [SP81] EXT Photo [SP81] INT Photo [SP81] Test Setup Photo [SP81] Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. Sincerely, Seunghyun KIM / Research Engineer

SENA_SP81_Label & Location

Internal Bluetooth Module & Antenna

Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 Date of issue: Jul. 27, 2020 Copyright Ⓒ 2020, DT&C Co., Ltd. SAR Plots Verification Plots SAR Test Plots DT&C Co., Ltd. DUT: Dipole 2450 MHz; Type: D2450V2; Serial: D2450V2 - SN726 Communication System: UID 0, CW (0); Frequency: 2450 MHz;Duty Cycle: 1:1 Medium parameters used: f = 2450 MHz; σ = 1.819 S/m; ε r = 37.921; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration: Probe: EX3DV4 - SN3930; ConvF(7.66, 7.66, 7.66) @ 2450 MHz; Calibrated: 11/18/2019 Electronics: DAE4 Sn1391 Sensor-Surface: 2mm (Mechanical Surface Detection) Phantom: Twin-SAM V5.0 ; Type: QD 000 P40 CD; Serial: 1679 Measurement SW: DASY52, Version 52.10 (3); SEMCAD X Version 14.6.13 (7474) Test Date: 2020-06-25; Ambient Temp: 20.9; Tissue Temp: 20.6 2 450 MHz System Verification(100mW) Area Scan (9x9x1): Measurement grid: dx=12mm, dy=12mm Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Power Drift = -0.06 dB Peak SAR (extrapolated) = 11.5 W/kg SAR(1 g) = 5.31 W/kg; SAR(10 g) = 2.42 W/kg 0 dB = 8.4 W/kg DT&C Co., Ltd. DUT: SP81; Type: Bluetooth Headset Communication System: UID 0, Bluetooth (0); Frequency: 2441 MHz;Duty Cycle: 1:1.302 Medium parameters used: f = 2441 MHz; σ = 1.81 S/m; ε r = 37.949; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY5 Configuration: Probe: EX3DV4 - SN3930; ConvF(7.66, 7.66, 7.66) @ 2441 MHz; Calibrated: 11/18/2019 Electronics: DAE4 Sn1391 Sensor-Surface: 2mm (Mechan ical Surface Detection) Phantom: Twin-SAM V5.0 ; Type: QD 000 P40 CD; Serial: 1679 Measurement SW: DASY52, Version 52.10 (3); SEMCAD X Version 14.6.13 (7474) Test Date: 2020-06-25; Ambient Temp: 20.9; Tissue Temp: 20.6 Touch from Body, Rear, Bluetooth 1Mbps Ch. 39, Ant Internal Area Scan (7x11x1): Measurement grid: dx=12mm, dy=12mm Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Power Drift = 0.07 dB Peak SAR (extrapolated) = 0.831 W/kg SAR(1 g) = 0.445 W/kg; SAR(10 g) = 0.210 W/kg 0 dB = 0.644 W/kg A1

Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 TRF-RF-601(03)161101 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 2 /46 Test Report Version Test Report No. Date Description Tested by Reviewed by DRRFCC2007-0055 Jul. 09, 2020 Initial issue BumJun Park HakMin Kim DRRFCC2007-0055(1) Jul. 16, 2020 Revised of customer address BumJun Park HakMin Kim DRRFCC2007-0055(2) Jul. 27, 2020 Revised of antenna type BumJun Park HakMin Kim Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 TRF-RF-601(03)161101 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 3 /46 Table of Contents 1. DESCRIPTION OF DEVICE .......................................................................................................... 4 1.1 Guidance Applied ................................................................................................................... 4 1.2 DUT Antenna Locations ......................................................................................................... 4 1.3 Power Reduction for SAR ...................................................................................................... 4 1.4 Power Reduction for SAR ...................................................................................................... 4 1.5 Device Serial Numbers .......................................................................................................... 4 2. INTROCUCTION ........................................................................................................................... 5 3. DESCRIPTION OF TEST EQUIPMENT ....................................................................................... 6 3.1 SAR MEASUREMENT SETUP .............................................................................................. 6 3.2 Probe Specification ................................................................................................................ 7 3.3 Probe Calibration Process ..................................................................................................... 8 3.3.1 E-Probe Calibration ........................................................................................................... 8 3.4 Data Extrapolation .................................................................................................................. 9 3.5 SAM Twin PHANTOM .......................................................................................................... 10 3.6 Device Holder for Transmitters ............................................................................................. 10 3.7 Brain Simulation Mixture Characterization ........................................................................... 11 3.8 SAR TEST EQUIPMENT ..................................................................................................... 11 4. TEST SYSTEM SPECIFICATIONS ............................................................................................. 12 5. SAR MEASUREMENT PROCEDURE ........................................................................................ 13 5.1 Measurement Procedure ...................................................................................................... 13 6. RF EXPOSURE LIMITS .............................................................................................................. 15 7. SAR MEASUREMENT PROCEDURES ..................................................................................... 16 7.1 Measured and Reported SAR .............................................................................................. 16 8. Nominal and Maximum Output Power Spec and RF Conducted Powers ............................ 17 8.1 Bluetooth Nominal and Maximum Output Power Spec and Conducted Powers ................. 17 9. SYSTEM VERIFICATION ............................................................................................................ 19 9.1 Tissue Verification ................................................................................................................ 19 9.2 Test System Verification ....................................................................................................... 19 10. SAR TEST RESULTS ............................................................................................................... 20 10.1 Head SAR Results ............................................................................................................. 20 10.2 SAR Test Notes .................................................................................................................. 20 11. MEASUREMENT UNCERTAINTIES ......................................................................................... 21 13. CONCLUSION ........................................................................................................................... 22 14. REFERENCES .......................................................................................................................... 23 Attachment 1. – Probe Calibration Data ...................................................................................... 25 Attachment 2. – Dipole Calibration Data ..................................................................................... 36 Attachment 3. – SAR SYSTEM VALIDATION ............................................................................... 45 Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 TRF-RF-601(03)161101 Prohibits the copying and re-issue of this report without DT&C approval. Pages: 4 /46 1. DESCRIPTION OF DEVICE Environmental evaluation measurements of specific absorption rate (SAR) distributions in emulated human head and body tissues exposed to radio frequency (RF) radiation from wireless portable devices for compliance with the rules and regulations of the U.S. Federal Communications Commission (FCC). General Information EUT type M1 FCC ID S7A-SP81 Equipment model name…

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Certificate of Test NTP-015-F06(Rev.03) NCT.CO., LTD. NCT Co., Ltd. 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, 18511, Korea (Tel: +82-31-323-6070 / Fax: +82-31-323-6071) Report No.: NW2007-F001 Page (1) / (59) 1. Client ○ Name : SENA TECHNOLOGIES.Inc ○ Address : 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, Korea ○ Date of Receipt : 2020-06-10 2. Use of Report : FCC & IC Approval 3. Test Sample ○ Description / Model Name : M1 / SP81 ○ FCC ID : S7A-SP81 / IC : 8154A-SP81 4. Date of Test : 2020-06-11 ~ 2020-06-19 5. Test method used : FCC Part 15 Subpart C 15.247 RSS-247 Issue 2(2017-02), RSS-GEN Issue 5(2019-03) 6. Testing Environment : ○ Temperature: (25  5) °C, Humidity: Less than 75 % R.H. * Unless specified otherwise in the individual methods, the tests were conducted on ambient conditions. 7. Test Results : Refer to the test results The results shown in this test report refer only to the sample(s) tested unless otherwise stated. This Test Report cannot be reproduced, except in full This test report is prepared according to the requirements of ISO / IEC 17025. Affirmation Tested by Jong-Myoung, Shin (signature) Technical Manager Kyung-Taek, Lee (signature) July 10, 2020 NCT CO., LTD. (seal) Test Repot No.: NW2007-F001 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, Korea 18511 www.nct.re.kr TEL: +82-31-323-6070 FAX: +82-31-323-6071 Page 2 of 59 Table of contents 1. General Information -------------------------------------------------------------------------------- 2. Information’s about Test Item ------------------------------------------------------------------- 3. Test Report -------------------------------------------------------------------------------------------- 3.1 Test Summary ------------------------------------------------------------------------------------- 3.2 Test Report Version ----------------------------------------------------------------------------- 3.3 Transmitter Requirements 3.3.1 Antenna Requirement --------------------------------------------------------------------- 3.3.2 20 ㏈ Bandwidth & Occupied Bandwidth (99%) ----------------------------------- 3.3.3 Number of Hopping Frequencies ------------------------------------------------------- 3.3.4 Time of Occupancy (Dwell Time) ------------------------------------------------------- 3.3.5 Carrier Frequencies Separation -------------------------------------------------------- 3.3.6 Peak Output Power ------------------------------------------------------------------------ 3.3.7 TX Radiated Spurious Emission and Conducted Spurious Emission --------- 3.3.8 Conducted Emission ----------------------------------------------------------------------- APPENDIX APPENDIX I TEST SETUP ---------------------------------------------------------------------- APPENDIX II TEST EQUIPMENT USED FOR TESTS ---------------------------------- 3 3 5 5 6 7 8 15 18 20 24 31 53 56 58 Test Repot No.: NW2007-F001 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, Korea 18511 www.nct.re.kr TEL: +82-31-323-6070 FAX: +82-31-323-6071 Page 3 of 59 1. General Information’s 1.1 Test Performed Laboratory : NCT Co., Ltd. Address : 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, 18511, Korea Telephone : +82-31-323-6070 Facsimile : +82-31-323-6071 FCC Designation No. : KR0166 FCC Registration No. : 409631 IC Site Registration No. : 25897 2. Information’s about Test Item 2.1 Applicant Information Company name : SENA TECHNOLOGIES.Inc Address : 19, Heolleung-ro 569-gil, Gangnam-gu, Seoul, Korea Telephone / Facsimile : +82-2-571-8283 / +82-2-573-7710 2.2 Equipment Under Test (EUT) description Test item particulars : M1 Model and/or type reference : SP81 Additional model name : - Serial number : Identification Antenna type and gain : Chip Antenna(M/N:SENA_009) with Max gain : 0.93 ㏈i Date (s) of performance of tests: : 2020-06-11 ~ 2020-06-19 Date of receipt of test item : 2020-06-10 EUT condition : Pre-production, not damaged Number of channel : 79 EUT Power Source : DC 3.8 V Type of Modulation : Basic Mode(GFSK), EDR Mode(Pi/4 DQPSK, 8DPSK) Fir㎽are version : 1.0 Hardware version : 1.0 Test software name(version) : CSR BlueSuite_BlueTest3(2.6.2) Test Repot No.: NW2007-F001 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, Korea 18511 www.nct.re.kr TEL: +82-31-323-6070 FAX: +82-31-323-6071 Page 4 of 59 2.3 Tested Frequency Test Mode Test frequency (㎒) Low frequency Middle frequency High frequency GFSK 2 402 2 442 2 480 Pi/4 DQPSK 2 402 2 442 2 480 8DPSK 2 402 2 442 2 480 2.4 Worst-Case BDR GFSK(DH5) EDR 8DPSK(3-DH5) Note: The power measurement has been conducted to determine the worst-case mode from all possible combinations between available modulations, data rates. Test Repot No.: NW2007-F001 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, Korea 18511 www.nct.re.kr TEL: +82-31-323-6070 FAX: +82-31-323-6071 Page 5 of 59 3. Test Report 3.1 Test Summary Applied FCC Rule IC Rule Test Items Test Condition Result 15.203 - Antenna Requirement Conducted C 15.247(a) - 20 ㏈ Bandwidth C - RSS GEN (6.7) Occupied Bandwidth (99%) C 15.247(a) RSS-247 (5.1) Number of Hopping Frequencies C 15.247(a) RSS-247 (5.1) Time of Occupancy (Dwell Time) C 15.247(a) RSS-247 (5.1) Carrier Frequencies Separation C 15.247(b) RSS-247 (5.4) Peak Output Power C 15.247(d) RSS-247 (5.5) Conducted Spurious Emission C 15.247(d) 15.205 & 15.209 RSS-247 (5.5) RSS-GEN (8.9 & 8.10) Radiated Spurious Emission Radiated C 15.207 RSS-GEN (8.8) Conducted Emissions AC Line Conducted C Note 1: C=Complies NC=Not Complies NT=Not Tested NA=Not Applicable The sample was tested according to the following specification: ANSI C63.10:2013. Compliance was determined by specification limits of the applicable standard according to customer requirements. Test Repot No.: NW2007-F001 211-71, Geumgok-ro, Hwaseong-si, Gyeonggi-do, Korea 18511 www.nct.re.kr TEL: +82-31-323-6070 FAX: +82-31-323-6071 Page 6 of 59 3.2 Test Report Version Test Report No. Date Description NW2007-F001 2020-07-10 Initial issue Test Repot No.: NW2007-F001 2…

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Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 Date of issue: Jul. 27, 2020 Co pyright Ⓒ 2020, DT&C Co., Ltd. SAR Test Setup Photographs Head SAR Test Photo Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 Date of issue: Jul. 27, 2020 Co pyright Ⓒ 2020, DT&C Co., Ltd. Test Setup Photo (Liquid depth) Note: The liquid depth is maintained at a minimum depth of 15 cm to minimize reflections from the upper surface. Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 Date of issue: Jul. 27, 2020 Co pyright Ⓒ 2020, DT&C Co., Ltd. Test Setup Photo (Head SAR Test Photo) Report No.: DRRFCC2007-0055(2) FCC ID: S7A-SP81 Date of issue: Jul. 27, 2020 Co pyright Ⓒ 2020, DT&C Co., Ltd. Test Setup Photo

Below 30 MHz Below 1 GHz Above 1 GHz Conducted Emission