Competition Electronics took all the best parts of thier Pocket Pro II design and added improvements to make the ProTimer among the best in value on the market. Now you can get more useful practice session information with a simple built-in user interface. Collect and review all your shot data right from the timer display with a 50 shot string memory and hit factor scoring calculation. Requires one 9volt alkaline or lithium battery for operation (not included) Features: Built-in 50 string memory and on-screen review, numbered in chronological order with date/time stamp. Stores all shot string data including hit factor scoring info Built-in Hit Factor (points p Mfg: Competition Electronics