Sturdy plastic build This timer is made from durable plastic designed to withstand frequent use and deliver reliable performance during intense chess matches. Multi mode functionality Includes BASIC, DELAY, BONUS, and BYO YOMI timing modes to accommodate different game formats and player preferences. Large screen with user friendly buttons Clear, easy to read display and oversized buttons allow quick, intuitive operation for fast setup and smooth gameplay. Efficient battery usage Energy saving design helps extend battery life; requires 2 x AAA batteries (not included) for operation. Use scenarios Club or tournament practice: Switch between BASIC and DELAY or BONUS to simulate a variety of time pressures and improve time management under competitive conditions. Training sessions: Use BYO YOMI to timings for specific drills, endgame work, or rapid play exercises. Home or casual play: Easy setup and large display make it convenient for family games, friendly matches, or quick, informal sessions.