Features: Portable and compact size, convenient for carrying and storage. 4 buttons only, easy to program and operate. Capable of setting same or different time for per player. Positive timing and presettable countdown, maximum 10 hours. Bonus and delay up to 59 seconds. Capable of changing time during game. Capable of setting alarm when the match is over. Capable of saving the last setting. Suitable for games such as chess, Chinese chess, go, etc. Specifications: Material: ABS Color: Wine red Display: LCD Power Supply: 1 * AA battery (NOT included) Working Voltage: DC 1.5V Working Current: 21.0A Product Size: Approx. 14*9.4*4cm / 5.51*3.7*1.57in Product Weight: Approx. 135g / 4.76oz Package Size: Approx. 17.2*10.3*5.9cm / 6.77*4.06*2.32in Package Weight: Approx. 272g / 9.59oz Packing List: 1 * Chess Clock 1 * Users Manual (English)