Multipurpose Design: The 3in1 chess clock supports multiple timing modes, including basic, rewards, delay, and positive timing, to suit different chess game scenarios. Userfriendly Interface: Large buttons provide a responsive press and precise operation, enabling easy and accurate control during play. Durable and Portable: Made of ABS plastic for durability; its compact and portable form makes it convenient to carry to tournaments and practice sessions. Energyefficient: Features an energysaving mechanism to extend battery life; requires 2 AAA batteries to operate. Compatibility and Performance: Designed for standard twoplayer chess games, delivering reliable timing and consistent performance. Use scenarios: During formal chess tournaments or club matches where straightforward and dependable timing is essential. In coaching or training sessions, using rewards or delay timing to structure drills and practice habits. For travel, practice rooms, or classroom drills, providing a compact, portable timing solution with quick resets and versatile modes.