2BBUE-RCII-SPINTSOBLUETOOTH INTERCOM HEADSET

Issued by: John Högström DATE: 2023-06-15 Page 1(8) Version 1.0A REFCOM II, User Manual Issued by: John Högström DATE: 2023-06-15 Page 2(8) Version 1.0A Table of Contents: SPINTSO REFCOM II, User Manual ......................................................................................................... 1 1. General ........................................................................................................................................ 3 2. Sections ....................................................................................................................................... 3 3. Overview ...................................................................................................................................... 4 4. Generic functions/features ......................................................................................................... 4 5. Handling....................................................................................................................................... 4 5.1. Activation................................................................................................................................. 4 5.2. Indications ............................................................................................................................... 4 5.2.1. LEDs ..................................................................................................................................... 4 5.2.2. Recorded voice .................................................................................................................... 5 5.3. Pairing ...................................................................................................................................... 5 5.4. LED Indications ........................................................................................................................ 5 5.4.1. Radio pairing mode ............................................................................................................. 5 5.4.2. Pairing .................................................................................................................................. 5 5.4.3. Connected state .................................................................................................................. 5 5.4.4. Not connected state ............................................................................................................ 5 5.5. Radio Connect ......................................................................................................................... 6 5.5.1. Connecting radios ................................................................................................................ 6 5.5.2. Disconnect in connected mode ........................................................................................... 6 5.5.3. Automatic re-connect. ......................................................................................................... 6 5.6. Volume control ........................................................................................................................ 6 5.7. Audio Menu ............................................................................................................................. 6 5.7.1. Battery status ...................................................................................................................... 6 5.7.2. Key-click sounds. ................................................................................................................. 6 5.8. Charging ................................................................................................................................... 7 5.8.1. Operational time ................................................................................................................. 7 6. Interfaces ..................................................................................................................................... 7 6.1. Headset .................................................................................................................................... 7 6.1. Charging & Data....................................................................................................................... 7 6.2. Antenna ................................................................................................................................... 7 7. Label ............................................................................................................................................ 7 8. Charging Cable ............................................................................................................................. 7 Issued by: John Högström DATE: 2023-06-15 Page 3(8) Version 1.0A 1. General The new Spintso Refcom II radio system is developed by Referees for Referees and is optimized for use in both indoor and outdoor sports environments. 2. Sections  4. Overview  5. Generic functions/features  6. Handling  7. Interfaces  8. Label  9. Charging cable Issued by: John Högström DATE: 2023-06-15 Page 4(8) Version 1.0A 3. Overview 4. Generic functions/features - Optimized for Referees - Open speech conference with high performance wind & ambient noise reduction. - Automatic whistle sound level limitation. - Compatible with both Spintso standard in-ear headset & Twistlock premium headsets - Bluetooth 5.1 standard encryption. - Customized high performance internal antenna solution. Line of site range ~800m - 2-4 users with full duplex audio. - Easy initial set-up by assigning each radio an individual id nr. (1-4) - Connects automatically at each match after power-on. - License Free 2.4GHz radio band, CE, UKCA, FCC, GITEKI. - Battery level announcement at start-up (High, Medium, Low) - Operational Time 10+h - Operating Temperature -10 to + 45 °C - Climatic environment IP54. Waterproof 3,5mm audio and USB-C connecto…

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2.911 (d)(7)USA Agent v1.2 Internal Section 2.911(d)(7) USA Agent for Service of Process Company name: SPINTSO AB Address: Drottninggatan 33, 11151 Stockholm, Sweden Product Name: BLUETOOTH INTERCOM HEADSET FCC ID: 2BBUE-RCII-SPINTSO Model(s): REFCOM II, REFCOM, REFCOM I, REFCOM II PRO, REFCOM III, REFCOM PRO 2.911(d)(7) USA Designated Agent for Service of Process We, [SPINTSO AB] (“the applicant”) designate [Third Team Store LLC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. USA Agent Company name: Third Team Store LLC Address: 1825 Ponce de Leon Suite 809 Coral Gables, FL 33134 FRN：0033958406 Contact Name: Matt Collier Telephone No: +1 305.797.8898 Email: [email protected] Applicant Company name: SPINTSO AB Address: Box 3113, 10362 Stockholm ,Sweden Contact Name: Nicklas Östh Telephone No: +46733103138 Email: [email protected] Signature: Matthew Collier Title: President Signature: Nicklas Östh Title: CEO 2.911 (d)(7)USA Agent v1.2 Internal Date: 07/05/2023 Date: 2023-07-03 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; 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-communications-supply-chain-through-the

SPINTSO AB Drottninggatan 33, 11151 Stockholm Sweden Agent Authorization Company: SPINTSO AB Address: Drottninggatan 33, 11151 Stockholm Sweden Product Name: BLUETOOTH INTERCOM HEADSET Model Number(s): REFCOM II, REFCOM, REFCOM I, REFCOM II PRO, REFCOM III, REFCOM PRO Product Description: BLUETOOTH INTERCOM HEADSET 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: Jun. 28, 2023 Name: Nicklas Osth Title: CEO Company: SPINTSO AB

SPINTSO AB Drottninggatan 33, 11151 Stockholm Sweden Jun. 28, 2023 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject: Explanation of differences between product types FCC ID: 2BBUE-RCII-SPINTSO Models: REFCOM II, REFCOM, REFCOM I, REFCOM II PRO, REFCOM III, REFCOM PRO To Whom It May Concern: We, The SPINTSO AB hereby declare that the model : REFCOM II is identical with the model : REFCOM, REFCOM I, REFCOM II PRO, REFCOM III, REFCOM PRO, except the model name. Except for the different above, no other modification is performed. Sincerely, SPINTSO AB Signature: [Nicklas Osth, CEO]

Report No.: AGC13961230501AP03 Page 1 of 4 EXTERNAL PHOTOS WHOLE VIEW OF EUT TOP VIEW OF EUT Report No.: AGC13961230501AP03 Page 2 of 4 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC13961230501AP03 Page 3 of 4 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC13961230501AP03 Page 4 of 4 RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location 10mm*20mm FCC ID: 2BBUE-RCII-SPINTSO

Report No.: AGC13961230501AP03 Page 1 of 4 INTERNAL PHOTOS VIEW OF EUT(PORT) OPEN VIEW OF EUT Report No.: AGC13961230501AP03 Page 2 of 4 VIEW OF BATTERY INTERNAL VIEW OF EUT-1 BT Antenna The module is shielded by software and does not work. Report No.: AGC13961230501AP03 Page 3 of 4 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 Modules tested in the report Report No.: AGC13961230501AP03 Page 4 of 4 INTERNAL VIEW OF EUT-4 ****************************************End of Report*************************************

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION FCC ID 2BBUE-RCII-SPINTSO Product Description BLUETOOTH INTERCOM HEADSET Model Name REFCOM II, REFCOM, REFCOM I, REFCOM II PRO, REFCOM III, REFCOM PRO Frequency Band (Operating) WLAN: 2.412GHz ~ 2.462GHz WLAN: 5.18GHz ~ 5.32GHz / 5.50GHz ~ 5.70GHz WLAN: 5.745GHz ~ 5825GHz Bluetooth: 2.402GHz ~ 2.480GHz Others (NFC:13.56MHz) Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Max. Output Power BR&EDR: 5.286dBm (Max) BLE GFSK 1Mbps: 3.141dBm (Max) Antenna Gain 4.37dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Evaluation Result Pass 2. PORTABLE DEVICE EVALUATION METHOD AND LIMIT Following FCC KDB 447498 D01 “General SAR test exclusion guidance” The corresponding SAR Exclusion Threshold condition, listed below: 1) 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)] [if(GHz)] s 3.0 for 1-g SAR and ñ 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. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50mm) ( f(MHz)/150)] mW, at 100MHz to 1500 MHz; b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)-10] mW at > 1500 MHz and ≤6 GHz; 3) At frequencies below 100 MHz, the following may be considered for SAR test exclusion. a) The threshold at the corresponding test separation distance at 100 MHz in step 2) is multiplied by [1 + log(100/f(MHz))] for test separation distances > 50 mm and < 200 mm. b) The threshold determined by the equation in a) for 50 mm and 100 MHz is multiplied by 1/2 for test separation distances ñ 50 mm. c) SAR measurement procedures are not established below 100 MHz. When SAR test exclusion cannot be applied, a KDB inquiry is required to determine SAR evaluation requirements for any test results to be acceptable. 3. MOBILE DEVICE EVALUATION METHOD AND LIMIT Human exposure to RF emissions from mobile devices (47 CFR §2.1091) may be evaluated based on the MPE limits adopted by the FCC for electric and magnetic field strength and/or power density, as appropriate, since exposures are assumed to occur at distances of 20 cm or more from persons. LIMITS FOR GENERAL POPULATION / UNCONTROLLED EXPOSURE Frequency Range (MHz) E-field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/cm 2 ) Averaging Time |E| 2 , |H| 2 or S (Minutes) 0.3 -- 1.34 614 1.63 (100)* 30 1.34 -- 30 824/f 2.19/f (180/f 2 )* 30 30 -- 300 27.5 0.073 0.2 30 300 -- 1500 -- -- f/1500 30 1500 -- 100,000 -- -- 1.0 30 *Note: 1. f= Frequency in MHz * Plane-wave Equivalent Power Density 2. The averaging time for General Population/Uncontrolled exposure to fixed transmitters is not applicable for mobile and portable transmitters. See 47 CFR §§2.1091 and 2.1093 on source-based time-averaging requirement for mobile and portable transmitters. S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. MEASUREMENT RESULT Test Mode Channel Frequency (MHz) Max Output power (dBm) Max Output power (mW) Calculati on Value (Note 1) Threshold Value 8DPSK BT_EDR 2402 5.286 3.378 1.047 3.0 GFSK BT_BLE 2402 3.141 2.061 0.639 3.0 Note 1: Calculation Value =[(max. power of channel, mW)/(min. test separation distance, mm)] ·[√f(GHz)]. BR&EDR: Fox example: 3.378/5*√2.402=1.047 ≤ 3.0 BLE GFSK 1Mbps:: Fox example: 2.061/5*√2.402=0.639 ≤ 3.0 According to KDB447498 D01 V06, threshold at which no SAR required is ≤3.0 for 1-g SAR, separation distance is 5mm, and no simultaneous SAR measurement is required. 5. CONCLUSION Since Source-base time average power is below SAR test exclusion power thresholds, the SAR evaluation is not required.

Page 1 of 68 FCC Test Report Report No.: AGC13961230501FE03 FCC ID : 2BBUE-RCII-SPINTSO APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : BLUETOOTH INTERCOM HEADSET BRAND NAME : SPINTSO MODEL NAME : REFCOM II, REFCOM, REFCOM I, REFCOM II PRO, REFCOM III, REFCOM PRO APPLICANT : SPINTSO AB DATE OF ISSUE : Jul. 12, 2023 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC13961230501FE03 Page 2 of 68 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jul. 12, 2023 Valid Initial Release Report No.: AGC13961230501FE03 Page 3 of 68 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY .................................................................................................................. 5 2. GENERAL INFORMATION .............................................................................................................................. 6 2.1. PRODUCT DESCRIPTION ........................................................................................................................ 6 2.2. TABLE OF CARRIER FREQUENCYS ....................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH .............................................................................................................. 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ......................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ......................................................... 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................... 8 2.7. TEST METHODOLOGY ............................................................................................................................. 8 2.8. SPECIAL ACCESSORIES ......................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS ................................................................................................................. 8 2.10. ANTENNA REQUIREMENT..................................................................................................................... 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................... 9 4. DESCRIPTION OF TEST MODES ................................................................................................................. 10 5. SYSTEM TEST CONFIGURATION ................................................................................................................ 11 5.1. CONFIGURATION OF EUT SYSTEM ...................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM .............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS .............................................................................................................. 11 6. TEST FACILITY .............................................................................................................................................. 12 7. PEAK OUTPUT POWER ................................................................................................................................ 13 7.1. MEASUREMENT PROCEDURE ............................................................................................................. 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT .................................................................................................. 14 8. 20DB BANDWIDTH ........................................................................................................................................ 19 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 19 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 19 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 20 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 25 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 25 Report No.: AGC13961230501FE03 Page 4 of 68 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 25 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 25 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 25 10. RADIATED EMISSION ................................................................................................................................. 46 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 46 10.2. TEST SETUP ......................................................................................................................................... 48 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 49 10.4. TEST RESULT........................................................................................................................................ 49 11. NUMBER OF HOPPING FREQUENCY ..................…

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ZLYDShenzhenZLYDTechnologyCo.,LTD Supplier:ShenzhenZhonglianYundaTechnologyCo.,LTD Address:5thFloor,Building4,DaxinXinmeiIndustrialPark,No.21GongchangRoad, GuangmingDistrict,Shenzhen Tel:0755-29890211 E-mail:[email protected] 1 / 5 Acknowledgement SPECIFICATIONFORAPPROVAL CUSTOMERNAME: PRODUCTNAME: Hardwareantenna CUSTOMERP/N: PartnumberP/N:20236200228REV:A MANUFACTURER SIGNATURE CUSTOMER SIGNATURE CHECKEDBY: Victor APPROVEDBY: EVINE DATE: 2023-06-20 ZLYDShenzhenZLYDTechnologyCo.,LTD Supplier:ShenzhenZhonglianYundaTechnologyCo.,LTD Address:5thFloor,Building4,DaxinXinmeiIndustrialPark,No.21GongchangRoad, GuangmingDistrict,Shenzhen Tel:0755-29890211 E-mail:[email protected] 2 / 5 Contents ltemDescription 一、 -------------------------------------------------------Changeresume 二、 -------------------------------------------------------Specificationsheet 三、 -----------------------------------------------------Finisheddrawing 四、 -------------------------------------------------------Testreport 五、 ---------------------------------Antennainstallationandusediagram ZLYDShenzhenZLYDTechnologyCo.,LTD Supplier:ShenzhenZhonglianYundaTechnologyCo.,LTD Address:5thFloor,Building4,DaxinXinmeiIndustrialPark,No.21GongchangRoad, GuangmingDistrict,Shenzhen Tel:0755-29890211 E-mail:[email protected] 3 / 5 一、Changeresume REVDATEChangelog A2023-06-20 Initialrelease ZLYDShenzhenZLYDTechnologyCo.,LTD Supplier:ShenzhenZhonglianYundaTechnologyCo., LTD Address:5th Floor, Building4, DaxinXinmeiIndustrialPark, No.21GongchangRoad, GuangmingDistrict,Shenzhen Tel: 0755-29890211 E-mail:[email protected] 4 / 5 二、 Specificationsheet Productmain technicalparameters 主要技术指标 Main technicalspecifications FrequencyRange (MHZ) 2400-2500 FrequencyRange (MHZ) 2400-2500 Impedance(Ω)50Impedance(Ω)50 Gain(dBi) 4.37 Gain(dBi) 4.37 VSWR ≤ 2.0VSWR ≤ 2.0 RadiationOmni-directionalRadiationOmni-directional ConnectorTypeplug-inConnectorTypeplug-in 物理性能PhysicalProperties Antennacover 304 Nickel plating Antennacover 304 Nickel plating OperatingTemp-20°C~+ 70°COperatingTemp-20°C~+ 70°C StorageTemp-20 °C ~+ 70 °C StorageTemp-20 °C ~+ 70 °C ZLYDShenzhenZLYDTechnologyCo.,LTD Supplier:ShenzhenZhonglianYundaTechnologyCo.,LTD Address:5thFloor,Building4,DaxinXinmeiIndustrialPark,No.21GongchangRoad, GuangmingDistrict,Shenzhen Tel:0755-29890211 E-mail:[email protected] 5 / 5 三、 Finisheddrawing Project Prototype Back of prototypefront Coordinate H面：XY面 E1面：XZ面 E2面：YZ面 Y x z Return Loss-ANT Project Project 2D/3D Pattern-ANT Gain table of Antenna Frequency (MHz)Efficiency (%)Peak Gain (dBi) 240082.013.86 241076.633.41 242083.723.85 243082.544.11 244084.384.37 245085.214.34 246087.254.22 247086.244.17 248083.453.79 249086.833.85 250077.763.45 Project ANT: 2.4-2.5g hardware AN Antenna position T

Report No.: AGC13961230501AP02 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC13961230501AP02 Page 2 of 2 AC POWER LINE CONDUCTED TEST SETUP RF CONDUCTED TEST SETUP ****************************************End of Report*************************************