Made of durable wooden casing and copper- alloy movement, safe, environmentally friendly and durable. This chess clock does not require batteries, is by a clockwork, and is easy to use, similar to the operation of a quartz clock. clock adopts a mechanical structure with a timing button. timing operation is intuitive, convenient, , and the daily error is not more than 1 second. it is suitable for timing clocks for chess games. Suitable for personal use, teaching use and types of chess games, such as chess, chess, go and . Maintenance: The chess clock should be prevented from contact with materials, and avoid exposure to the , rain, falling and to strong magnetic fields. Specification: Colour:Wood color Material:Wood+plastic+metal Size:15x5.5x9cm Package Contents: 1 * Wooden Chess Timer Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.