Coros Heart Rate Monitor
38 h of full operation, or 80 days on standby, from an armband. It connects over Bluetooth to 3 devices at once, and Coros lists no ANT+.
What the maker states
| Battery | 38 h, Full operation; 80 days standby |
|---|---|
| Heart rate sensor | Multi-channel optical, upper arm |
| External sensors | Bluetooth, up to 3 devices |
| App | COROS App |