Super wide brightness range. 15 Levels with memory. Motion sensor controlled. Just turn your E-Tac Light on and leave it on! It will turn on the second you move your bow and after a customizable pre-set amount of time without any motion, the on-board motion sensor automatically turns the light off to save battery. The customizable timer can be set from 10 Sec to 10mins. 600mAh Li-ion battery. 2 hours charge time. Battery life: approx. 600 hours (level 1), 100 hours (Level 7), 30 Hours (Level 15). 4 Mounting solutions to fit almost every bow on the market, old and new. The E-Tac Light can be solidly mounted on the sight or riser with the included CNC aluminum mounts. LED options: Blue, Purple, UV, and White. The blue & purple LEDs are ideal for green fibers. The UV LED is ideal for blue fibers. The white LED tends to “dilute” colors, and is ideal for red fibers. Water-proof LED-housing. CNC T6 aluminum shell, 3/8-32 Thread, nylon-braided cable sealed with epoxy, covered by 5/64” thick tempered-glass. LCD display. Back-lit/Multi-function. CNC T6 Aircraft aluminum body. Hard-anodizing. Laser engraved. The CNC machined Unibody shell is sealed and covered by a carbon fiber panel. The Micro-USB port is O-Ring-sealed and water resistant. Two high quality Fast-Chargers included. The main body and LED assembly can be run over by a full-size pick-up truck and still function without an issue.