The DGT North American clock uses 10 built-in algorithms to give a complete range of timing choices, plus elegant design to satisfy the most demanding chess player. 
Even multi-period delay settings are easy! Quick-set options permit instant set-up. Manual programming options are fast and intuitive and are automatically stored in memory. Of course our best-selling digital timer is a superb chess clock, but it also times any two-person board game—like Go, Shogi, Checkers, and Scrabble©. All the bells and whistles, together with DGT’s reputation for quality and accuracy
Time options: time, time + sudden death, 2x + sudden death, time + repeating time, bonus ("Fischer") options, time + bonus, 2x time + bonus, bonus single period, bonus tournament. Requires two AA batteries, included. Clock dimensions: 7½'' long X 2'' high X 4'' deep.
Set delay controls for two or even three time periods!
Quick and easy to set and program!
Choose quick-set options for the 13 most popular controls
Set any control manually and fast!
Turn move-counter on and off in any option
Super-easy to correct both time and move count
Sound-alert option warns of time trouble
Signals a low battery
2-year warranty against manufacturing defects
Batteries are included with each clock.