Fenix TK75 Extension Tube - AER-TK75-BK Compression Lock it runs up to 184

it runs up to 184 minutes (Batteries included)

Ergonomic shape

The 3600mAh and 3200mAh batteries allow 500 recharge cycles that provides an exceptionally economical solution to battery usage

this light is super compact and easy to carry around

Fenix TK75 Extension Tube - AER-TK75-BK Compression Lock it runs up to 184Extended Runtime Go longer with the Fenix Extended Runtime Kit. Specifically designed for your favorite flashlight. Adds extended runtime to your flashlight without affecting brightness levels and modes. Model #: RKTK75 Material: Battery Tube & Holder Function: Extends the runtime of your flashlight Compatibility: TK75