Product specs:

UniStop is the right choice when you want an easy to use stop watch with the high quality and elegant design that comes standard with the Unipro products. You can take lap and split times on up to 4 drivers.
 
• Timing of up to 4 drivers with up to 9 splits per lap.
• Transfer data to PC (USB).
• Multi language user interface,built in clock
• Large graphical display.
• Visual indication of faster/slower times from 3 powerfull LEDs.
• Calc of theoretical best lap time.
• Includes keystrap.