Large flexible button with better sense of press.
High quality of ABS plastic durable material shell.
Available for bonus & delay mode.
Portable energy saving design.
Basic: Set basic time.
Bonus：Set basic time and bonus time.
Delay：Set basic time, second reading times and time.
Positive Timing: Set basic time to be 0 for overall rationing system
Color: Black / Yellow (Optional)
Battery: 2 * AAA battery (included)
Screen size: 103 * 23mm / 4.06 * 0.91in
Item size: 140 * 88 * 45mm / 5.51 * 3.46 * 1.77in
Item weight: 105g / 3.70ounce
Package size: 150 * 100 * 50mm / 5.91 * 3.94 * 1.97in
Package weight: 157g / 5.54ounce
1 * Chess Clock