Shooting Chrony Alpha

* Gives numbered shot velocities * Velocity stays on display until you shoot again * Stereo Jack for optional Remote Control or Printer * Upgrades to any model. To upgrade to Alpha Chrony memory and statistics, just order the Remote Control for U.S. $ 12.95 / CDN $19.45 (Item 16) * Uses one 9 volt alkaline battery with 48 hours of continuous use. All the features of the F-1 ...PLUS: * ONE String, from 2 to 32 shot memory (Numbered) * Measures High, Low and Average Velocities, Extreme Spread and Standard Deviations. * Retrieval of individual shot velocity measurements * Delete individual shots from memory (with automatic adjustment of Statistics)