1. 6 major rules, 12 presets 2. Check the bureau time/steps/reading times/reading time at any time, with voice prompts 3. Can set several groups of common time, can be used repeatedly after saving, power on memory is still on after power off, easy to use 4. Applicable: Go, Chess 5. Power supply: 2 AA batteries (not included) 6. function: package system, plus seconds system, reading seconds system, each step limit, each step reading seconds, positive timing, remembering steps, voice reading seconds, memory function 7. Human voice chime: 30 20 10 9 8 7 6 5 4 3 2 1 timeout 8. Material: ABS 9. Size: about 17.5 x 8.5 x 5cm 10. Weight: about 218g
