The Burris Clip-on v2 turns your traditional riflescope into a thermal optics. The BTC V2 offers adaptability with 1x, 2x and 4x power zoom capabilities and a selection of five vivid color palettes. The Burris Clip-on allows you to identify thermal signatures up to 750 yards out. Mounting options- M33.5 x 0.75 threaded eyepiece SmartClip, 1/4-20 interface for M1913 QD Mount. Additional features include Eye Relief: 10mm, Battery Size: CR123 / 16340 Rechargeable Li-Ion, Zoom: 1x / 2x / 4x, Length: 5.90, and Proofs: Fog Proof / Shockproof / Waterproof. It also specifies Focus Type: Manual, Modes: Black, Blue, Green, Red, White Hot, Power Source: USB-C, Detection Range: 1100 yds, Battery Life: 2+ hrs, and Compatible With: BurrisConnect App. Furthermore, it includes Scope Type: Clip On / Handheld / Mountable, Weight: 16.20 oz, Exit Pupil Diameter: 18mm, Picture or Video: Photo / PiP / Video, and Diopter Adjustment: -4 / +4.