DGT North American Digital Chess Clock (Upgraded Version)Upgraded Version DGT NA Digital Chess Clock The DGT NA (North American) clock Upgraded Version New Chasis. New Presets. DGT North America handles all chess tournament settings. Increment or Delay. 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 digital timer is a superb chess clock, but it also times any two person