IQ Sight Light ULTIMATE ACCESSORY - Fits IQ Bowsights and most SURE-LOC sights, both right and left-hand models HIGHLY ADJUSTABLE - Rheostat control for variable light intensity purple low glare light BRIGHTEN YOUR SIGHT PICTURE  Ideal for low light conditions: inclement weather, hunting from a dark blind, etc. BATTERIES INCLUDED  Powered by (3) Energizer 392 (or comparable) batteries which can be replaced