Wahoo TRACKR Heart Rate
Over 100 h per USB-C charge at 39 g, broadcasting to three Bluetooth devices at once. It's IPX7, and Wahoo says it isn't built for lap-pool swim tracking.
What the maker states
| Battery | 100 h, Over 100 h, rechargeable |
|---|---|
| Weight | 39 g, With strap |
| Water rating | IPX7 |
| Heart rate sensor | Chest strap |
| External sensors | ANT+ and up to 3 Bluetooth connections |