1. Simple operation, with memory function, once set, repeated use 2. Quickly selected, set the rules, a key to start 3. Scope of application: chess, go, chess 4. Function: packet system/add seconds system/reading seconds system/positive timing/step counting 5. Power supply: 2 AAA battery power supply (not included) 6. Size: about 14 x 8.8 x 4.5cm 7. Weight: about 105g
