Material: plastic Colour: Black Size: about 15 x 5.5 x 9cm Net weight: 280 (g) Widely used: chess, Chinese chess, etc. Package List 1 x Chess Clock Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size. 11.Classic simulation style: This alarm clock chess timer is the perfect addition to any game or class game. It has the Royal Chess logo for a more formal look. If you want to make your game more competitive, this clock is a great way to level up. 22.Easy to use: This lightweight portable chess clock is easy to operate, with just one click of a button Pressing the button at the top starts and stops the unit, but both clocks can be frozen by holding the button at an even level. Both clocks are easy to reset on the back, and each top button has a locking clip. 33. High-quality : This timer has a quartz clock that uses an electronic oscillator regulated by a quartz crystal to keep time. The frequency accuracy produced by crystal oscillators makes quartz clocks at least an order of magnitude more accurate than mechanical clocks. The solid black plastic housing is reliable in construction and will stand the test of time. 44.Good for you: The benefits of chess are huge. Children who play chess can improve their critical thinking, problem-solving, spatial awareness, and social skills, making it a great addition to any classroom or home. 55.Widely used: Suitable for Chinese chess, and international chess. No batteries are required, and the winding mechanism ensures you don't have to interrupt the game to change the battery.