Flexible and responsive buttons: The 3in1 Multipurpose Portable Professional Chess Clock Digital Chess Timer uses large, flexible buttons that provide a comfortable, precise press for easy time control during games. ABS plastic housing: Built with an ABS plastic housing to withstand frequent use, delivering sturdy durability and reliable performance for chess enthusiasts. Bonus and delayed modes: It has bonus and delayed timing options. Portable and energysaving design: Compact and lightweight for easy transportation and storage, with an energyefficient design to extend battery life and reduce the need for frequent battery changes. Use scenarios: Club or tournament play: Quick, reliable time controls for fastpaced games with clear, tactile feedback from the large buttons. Training and coaching: Practice with students using adjustable time options such as bonus and delay to simulate different endgame scenarios. Travel and casual play: Take it on the go due to its portable size and long battery life, suitable for games away from home.