MDT, LRA Send iT, MV3 Electronic Level, Anodized Finish, Black, Fits Picatinny NEW 5 Color LEDs Brightness Adjustment 5 Sensitivity Levels Factory Calibrated Optional User Calibration Mode Weather Resistant Auto Sleep Mode Toolless Battery Replacement 100 Plus Hour Battery Life Product Description Long Range Arms was started by a few friends and avid shooters in 2016 with the invention of the Send iT Electronic Level. The idea of the Send iT level began taking shape during a conversation about the shortcomings of traditional spirit levels when a simple comment sparked the idea: wouldn't it be nice if you never had to take your eye off the target. The original Send iT hit the market after a year of designing, testing, and incorporating functionality from every "wouldn't it be nice if" comment. Newer, more modular models such as the Send iT - MV3 have since superseded the original.