Sturdy plastic build Durable plastic construction designed for frequent use and reliable function during intense chess matches. Multi mode functionality Includes BASIC, DELAY, BONUS, and BYO YOMI timing modes to accommodate different game formats and training needs. Large screen with user friendly buttons Clear display that is easy to read at a glance, with oversized buttons for quick access and efficient operation during playtime. Efficient battery usage Energy saving design helps extend battery life; requires 2 x AAA batteries (not included) for operation. Use scenarios In tournament or club play where you switch between time controls, this timer supports BASIC, DELAY, BONUS, and BYO YOMI to match the required rules. During coaching or teaching sessions, the large screen and easy to use buttons help students follow timing and learn formats without confusion. For home practice or quick blitz sessions, the sturdy build and battery efficiency provide dependable performance with simple battery setup.