The Master Chronys have the same capabilites as their respective Shooting Chrony counterparts. In addition to that, the MASTER CROHNYS have a monitor which brings the LCD right up to your bench, away from the bullets path. It also saves you the purchase of a remote control. Gives numbered shots Velocity stays on the display until next shot is fired Uses 9 Volt Alkaline Battery with 48 hours of continuous use Stereo Jack for optional remote or printer ONE String, from 2-32 shot memory Measures High, Low and Average Velocities, Extreme Spread and Standard deviation Change from FPS to M/sec Retrieval of individual shot velocities and statistics Delete individual shots from memory (automatically adjustment of statistics) 60 Shot memory (divided into 6 numbered strings of up to 10 shots each, with one set of statistics for each string) Can be switched off, taken home and switched on for reveiwing and/ or information retrieval Moves instantly from string to string, interrupts shooting on any string without memory loss, each string delivers its own statistics.