Wahoo TICKR FIT
Up to 30 h per charge from a 19.8 g forearm or upper-arm band. It charges on a magnetic puck and, like the TRACKR, isn't built for lap-pool swim tracking.
What the maker states
| Battery | 30 h, Rechargeable |
|---|---|
| Weight | 19.8 g, With strap |
| Water rating | IPX7 |
| Heart rate sensor | Optical armband |
| External sensors | ANT+ and Bluetooth |