Redline RL-Torch Sight 2 Pin Grey LH USB Rechargeable Integrated 4 Stage Sight Light;Right/Left Dual Yardage Tapes;Brass Self-Lubricating Micro Windage Adjustment;Dual Vertical Pins [.019th ] & [adjustable .010th ];Metal Tape Yardage (comes with 40 metal yardage tapes);Dual Gear Driven, Ultra Smooth & Precise Wheel Driven Slider;Quick Flip to Adjustable Hard Stop Sets on Wheel Slider for Quick Yardage Selection 1st, 2nd, and 3rd Axis Adjustments;Bubble Level (comes with 3 - Green/Red/Blue);Sight Weight: 11 oz for Fixed Bracket and 13 oz for Dovetail;Battery Life: 8 Hours Straight Run Time