Three operation modes designed to support multiple GO rules. This GOfriendly chess clock provides flexible timing options for different formats and clubs. Chess clock timer with step counting, count up, and countdown. for GO practice, informal matches, and tournaments that use varied time controls. Easy operation with quick rule selection and onebutton start. Simple setup helps you begin play faster and minimizes setup time between moves. Memory function and professional digital electronic counter. Settings are stored for repeated use, enabling reliable, repeatable timing across rounds after a single setup. Use scenarios GO club or tournament play: accommodating diverse time controls across rounds with minimal reconfiguration between games. Practice and training sessions: quick load of standard timing rules, fast restarts, and consistent timing to track progress over multiple practice games. Casual game nights or classroom demonstrations: easy to operate for players to timing devices, with dependable performance for group sessions.