Bundle: Klarus ST15 CREE XP-L HI V3 LED 1100 Lumens Watereproof Flashlight With 18650 Rechargeable Battery and Skyben USB Light Utilizes CREE XP-L HI V3 LED with a lifespan of up to 50,000 hours 4 lighting modes and 2 flashing modes Working voltage: 2.5V-8.4V Compatible Batteries: 1x 18650 battery with PCB protection or 2 x CR123A batteries The two separate switches with distinct functions simplify operation