Has all the features of the Beta...PLUS: Ballistic Chrony Printer. 500 shot memory (divided into 50 numbered strings of 2 to 10 shots each). Timer Button. The Gamma (at all times) measures and stores not only shot velocities but also time-elapsed between shots, including total time. To make the Time-Data visible, press the Timer Button. When in Timer-Mode the Chrony will also measure velocities at a rate of up to 1800 rounds/minute as well as the time elapsed between shots. Monitor which brings the LCD right up to your bench.