Silicone Wrist Sport Band for Polar A360 A370 Watchband Strap Replacement for POLAR A360/A370 GPS Smart Watch Accessories - AliExpress
A370 User Manual | Wristband
Polar A370 Fitness Tracker with 24/7 Wrist Based Heart Rate, GPS via phone (90064905) + Bluetooth Digital Body Mass Bathroom Scale + Fusion Bluetooth Headphones Black/Red + 1 Year Extended Warranty - Walmart.com