Polar H7 Bluetooth Smart Heart Rate Chest Transmitter M-XXL Pink Band | eBay
Polar WearLink + Transmitter Heart Rate Sensor - Works with Nike *NEW/SEALED!* | eBay
Newbie here. Just bought a used late-2021 C2 RowErg for $800 that included a Polar H9 + receiver. Should I sell it or keep it? I already have an Apple Watch that