<p>Timing rules includes BASIC, BOUNS, DELAY, BYO-YOMI and COUNT-UP, it automatically switches to the positive timing mode after countdown.</p> <p>User-defined time can be set up to 9:59:59, different timing parameters can be set for both sides, and the time can be modified during the game.</p> <p>It can automatically save the parameters set before shutdown.</p> <p>Step recording function: you can view or modify the number of step taken uo to 999 step.</p> <p>Sound and shutdown function: you can turn\/off the voice prompt, or turn on\/off the chess clock.</p> <p>Functions:BASIC: Means timing mode in current time</p> <p>DELAY: Means current delay mode in current time</p> <p>BONUS: Means second increasing mode in current time</p> <p>BYO-YOMI: Means Go countdown mode in current time</p> <p>Battery: 2 x AA battery (not included)</p> <p>Colour:Black</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 x chronograph</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>