Ⅰ. Take your chess game to the next level with a chess clock, crafted for accuracy and convenience. This timer has 42 preset rules that allow you to easily customize your game. With an intuitive interface and quiet operation, you can focus on your strategy without distractions. Ⅱ. Key Features: Advanced Countdown Function: Enables multi-section countdown, positive time, and move delay, giving you a competitive edge. Versatile Time Settings: Set different settings on the left and right sides and change them during the game for a smooth experience. Display and Controls: Easily track the number of chess moves and mute the timer to avoid distractions. Preset Rules: Choose from 42 preset rules to suit your playing style and offer a range of customization. Construction: Made of plastic and metal, this chess clock is built to last. Portability: Compact design and lightweight construction make it easy to take with you wherever you play. Ⅲ. Specifications: Material: Plastic + Metal Battery: 2 * AA: 1.5V, 800mAh (Batteries not included) · Item size: 161 * 100 * 62mm / 6.3 * 3.9 * 2.4in · Item weight: 245g / 8.6oz · Package size: 150 * 100 * 50mm / 5.9 * 3.9 * 2.0in · Package weight: 400g / 0.9lb Ⅳ. Package includes: · 1 * Chess Clock