Polar Verity Sense - Optical Heart Rate Monitor Armband for Sport - ANT+ and Dual Bluetooth HRM - Waterproof HR Sensor with only One Button - Compatible with Peloton, Zwift and other
No brand / Not sure | Wearables | Diggro Smart Fitness Tracker Id15hr Smart Bracelet Preowned Good Condition | Poshmark
HUAKUA V101 Smart HRm Bracelet User Guide
VeryFitPro [ID115U HR Smart Bracelet] User Manual - Manuals+
R1 New Bluetooth Smart Band Waterproof Sports Fitness Tracker Smart Bracelet Heart Rate Blood Pressure For Men Women Wristband - Wristbands - AliExpress
Open Your Smart HRM Bracelet: A Step-By-Step Guide – Sweetandspark