Has user ID function to separate data. Display/prints lap or split times as a block which can also be recalled. 300 Memory Three display lines. Time/calendar display. Auto start function. Includes watch, lanyard, batteries, 2 rolls paper (600 lines each). Compact size: 3 1/2 wide x 8" long x 1" thick. 3 year guarantee Please note that the large thermal paper offered only works with the paper extender accessory!!"