Classic simulation style: This chess timer complements any game or classroom setting. It features the Royal Chess logo for a formal appearance. Easy to use: The lightweight and portable chess clock operates with a single button press. The top buttons control start/stop functions, while keeping them level freezes both clocks. Reset functions are located on the back. Condition: New: The timer uses a crystal-adjusted electronic oscillator for precision timekeeping, significantly more accurate than mechanical clocks. The durable black plastic shell ensures long-lasting performance. Application: Suitable for Chinese Chess and International Chess. Battery replacement can be done without interrupting gameplay. Instructions: 1. Press the left button to stop the left clock and start the right clock, and vice versa. Keeping both buttons level stops both clocks. 2. Adjust the second hand to the 12 o'clock position by operating both buttons alternately. Align the minute hand using the arrow on the back. 3. Avoid contact with corrosive materials, direct sunlight, rain, drops, and strong magnetic fields for maintenance.