-quiet scanning movement, eliminating noise interference. Give you a comfortable sleeping environment. Acrylic does not damage the wall, can be freely adjusted.The can be freely adjusted in size, which is a good furniture decoration. Accurate travel time and low power consumption. Creative dancer note design. Easy installation, powered by 1 battery (not included). colour:black Material:Metal + Acrylic size:Hour hand:31 cm / 12.4 inch Minute hand:39 cm / 15.3 inch clock machine:12 cm / 4.9 inch Package Contents: 1*Wall Clock(Batteries not included) Only the above package content, other products are not included. Applicable:Do not use alkaline high-flow batteries to avoid damage to the movement. Low-flow carbon batteries are recommended Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.