Trinity Force DH1SLB: The Trinity Force / Tippmann Polymer Red Dot Sight provides unlimited eye relief for flexible mounting. The LED on this model also 100% safe for the eye and has an integrated mount compatible with Weaver, Picatinny, and MIL-STD 1913 rails. This model features a 24.0 X 34.0 mm objective lens and an easy to use standard On/Off Switch. Uses CR2032 Battery (included)