2AEHH-W522APEX 2

FCC Warning 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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: 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. The device has been evaluated to meet general RF exposure requirement. The device can be u sed in portable exposure condition without restriction ISED Canada This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) This device may not cause interference, and (2) This device must accept any interference, including interference that may cause undesired operation of the device. Le présentappareilestconf orme aux CNR d' Industrie Canada applicables aux appareils radio exempts de licence. L'exploitationestautorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l' utilisateur de l'appareildoit accepter tout brouillageradioélectriquesubi, mêmesi le brouillageest susceptible d'encompromettre le fonctionnement. How to check the Legal & Regulatory information: Choose: Setting→General→Legal & Regulatory

Coros Wearables Inc. (2022.10.24) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (APEX 2/ W522 / FCC ID: 2AEHH- W522) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Wu Qiang Title: Quality Director

Coros Wearables Inc. (2022.10.24) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Wu Qiang Title: Quality Director

External Photos ANT

W522 E-lable E-label Location Screen FCC ID: 2AEHH-W522 IC: 25590-W5212 Model/HVIN W522 User are able to access the information in no more than three steps in a device's menu. The actual steps are: To access the e-lable information, in the device, Choose: Setting→General→Legal & Regulatory No special access codes or permissions are required to go through the above steps beyond entering a user-defined password to protect against unauthorized access to the device. 214-XXXXX

Internal Photos

24008.87 -6.06 24108.77-5.85 24208.24-5.85 24307.97-5.76 24407.86-5.58 2450 7.48-5.27 24607.46-5.48 24707.48-5.41 2480 7.71-5.51 24907.42-5.37 25007.43-5.38 3.Antenna pattern Frequency(Mhz)Efficiency(%)Gain(dBi) 1. Cable loss：0.3dbm 2. Antenna peak gain：-5.27dBi； Company: Model: Guangdong COROS Sports Technology Joint Stock Company LPANT4310 Antenna Type: LOOP – Antenna Frequency: 2.4GHz Theta90 Phi0 Phi90 4.Antenna size：Ø43mm

Shenzhen CTB Testing Co., Ltd. FCC ID: 2AEHH-W522 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 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 When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. EDR: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 1.369 1.37 1±1 2.00 1.58 <5 0.49127 3.00 YES 2.441 0.215 1.05 0±1 1.00 1.26 <5 0.39338 3.00 YES 2.480 -0.498 0.89 0±1 1.00 1.26 <5 0.39651 3.00 YES 2.402 1.854 1.53 1±1 2.00 1.58 <5 0.49127 3.00 YES 2.441 0.668 1.17 0±1 1.00 1.26 <5 0.39338 3.00 YES 2.480 0.006 1.00 0±1 1.00 1.26 <5 0.39651 3.00 YES 2.402 2.411 1.74 2±1 3.00 2.00 <5 0.61847 3.00 YES 2.441 1.261 1.34 1±1 2.00 1.58 <5 0.49524 3.00 YES 2.480 0.678 1.17 0±1 1.00 1.26 <5 0.39651 3.00 YES GFSK π /4DQPSK 8DQPSK BLE: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 -1.461 0.71 -1±1 0.00 1.00 <5 0.30997 3.00 YES 2.44 -2.065 0.62 -2±1 -1.00 0.79 <5 0.24816 3.00 YES 2.480 -2.175 0.61 -2±1 -1.00 0.79 <5 0.25018 3.00 YES GFSK Shenzhen CTB Testing Co., Ltd. 2.4GWIFI: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.412 4.56 2.86 4±1 5.00 3.16 <5 0.98224 3.00 YES 2.437 4.468 2.80 4±1 5.00 3.16 <5 0.98732 3.00 YES 2.462 4.463 2.79 4±1 5.00 3.16 <5 0.99237 3.00 YES 2.412 3.689 2.34 3±1 4.00 2.51 <5 0.78022 3.00 YES 2.437 3.58 2.28 3±1 4.00 2.51 <5 0.78426 3.00 YES 2.462 3.624 2.30 3±1 4.00 2.51 <5 0.78827 3.00 YES 2.412 3.694 2.34 3±1 4.00 2.51 <5 0.78022 3.00 YES 2.437 3.661 2.32 3±1 4.00 2.51 <5 0.78426 3.00 YES 2.462 3.481 2.23 3±1 4.00 2.51 <5 0.78827 3.00 YES 802.11b 802.11g 802.11n( HT20) Conclusion: BT+WIFI supported simultaneous transmission: BT+2.4GWIFI=0.61847+0.99237=1.61084≤3, So passed.

Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220929049RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 58 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: APEX 2 FCC ID: 2AEHH-W522 Trademark: COROS Model Number: W522 Prepared For: Coros Wearables Inc. Address: 3 Peters Canyon Road Suite 100,Irvine,CA 92606,USA Manufacturer: Guangdong COROS Sports Technology Joint Stock Company Address: Room 601, room 701, Building 2, No. 2, Science and Technology 9 Rd, Songshan Lake Hi Tech Zone, Dongguan city, Guangdong province, P.R. China Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: Floor 1&2, Building A, No. 26 of Xinhe Road, Xinqiao Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, China. Sample Received Date: Sep. 29, 2022 Sample tested Date: Sep. 29, 2022 to Oct. 19, 2022 Issue Date: Oct. 19, 2022 Report No.: CTB220929049RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.: CTB220929049RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 58 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 4 2. TEST SUMMARY ................................................................... 5 3. MEASUREMENT UNCERTAINTY ..................................................... 6 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 7 4.1 Product Information .................................................................... 7 4.2 Test Setup Configuration ............................................................... 7 4.3 Support Equipment .................................................................... 7 4.4 Channel List .......................................................................... 8 4.5 Test Mode ............................................................................ 8 4.6 Test Environment ...................................................................... 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 9 5.1 Test Facility ........................................................................... 9 5.2 Test Instrument Used .................................................................. 9 6. AC POWER LINE CONDUCTED EMISSION ............................................ 11 6.1 Block Diagram Of Test Setup .......................................................... 11 6.2 Limit ................................................................................ 11 6.3 Test procedure ....................................................................... 11 6.4 Test Result .......................................................................... 13 7. RADIATED SPURIOUS EMISSION ................................................... 15 7.1 Block Diagram Of Test Setup .......................................................... 15 7.2 Limit ................................................................................ 15 7.3 Test procedure ....................................................................... 16 7.4 Test Result .......................................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 26 8.1 Block Diagram Of Test Setup .......................................................... 26 8.2 Limit ................................................................................ 26 8.3 Test procedure ....................................................................... 26 8.4 Test Result .......................................................................... 27 9. COUDUCTED PEAK OUTPUT POWER ............................................... 34 9.1 Block Diagram Of Test Setup .......................................................... 34 9.2 Limit ................................................................................ 34 9.3 Test procedure ....................................................................... 34 9.4 Test Result .......................................................................... 35 10. 20DB OCCUPIED BANDWIDTH...................................................... 39 10.1 Block Diagram Of Test Setup ......................................................... 39 10.2 Limit ............................................................................... 39 10.3 Test procedure ...................................................................... 39 10.4 Test Result ......................................................................... 39 11. CARRIERFREQUENCIES SEPARATION .............................................. 43 11.1 Block Diagram Of Test Setup ......................................................... 43 11.2 Limit ............................................................................... 43 11.3 Test procedure ...................................................................... 43 11.4 Test Result ......................................................................... 43 12. HOPPING CHANNEL NUMBER ...................................................... 47 12.1 Block Diagram Of Test Setup ......................................................... 47 12…

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

Radiated Emission Below 1G Above 1GHz Conducted Emission