Streamlight TLR 9 Flex Weapon Light Subcategory_Spinning Combos providing your BDX sight or providing your BDX sight or riflescope with an automatically illuminated holdover dot through Bluetooth pairing out to 800 yards 6x20mm monocular with SpectraCoat anti reflection coatings and HT LCD High Transmittance LCD for superior light transmission and optical clarity Revolutionary LightWave DSP Technology for the fastest and longest distance rangefinder engine at this price point HyperScan Technology provides 4 range updates per second in scan mode while RangeLock reports the last range result when ranging distant targets in scan mode Embedded Applied Ballistics Ultralite with bullet database and support for G1 G7 curves Low Energy Bluetooth 4 Features: Bearing Count: 11 Gear Ratio: 7 It features an ambidextrous on off switch and a rail clamp that is designed to rapidly attach detach from a broad range of full frame weapons 5 hours Custom optic produces a concentrated beam with optimum peripheral illumination Ambidextrous on off switch Uses two CR123A lithium batteries (included) Safe off feature prevents accidental activation