- 750 claimed lumens
- 1h 50min reported battery life
- flashing mode
- no pulse mode
- 4 brightness levels
- Included mounts: Strap
Fenix BT lights use an external battery pack separate from the light head.
The BT20 has a single LED with a custom lens creating a dual spot/flood beam. It uses 18650 batteries in an external case. The batteries and charger are not included with the light, but some merchants offer bundles with batteries included.