1.[Plastic Material]: The small circular alarm clock is made of plastic material, sturdy and durable, even if accidentally dropped is not easy to break, and feel smoothly, very easy to clean. 2.[On and Off Button]: The plastic circular alarm clock has an on and off button, which can help you turn the alarm on or off easily, and the operation is simple and effortless 3.[AA Battery Powered]: The simple circular alarm clock only needs to be installed with an AA battery(not included), which is easy to replace and keep you from radiation damage. 4.[Quiet Pointer]: The button circular alarm clock has quiet pointer, will not make annoying noises, bringing you a peaceful and quiet environment to study or sleep. 5.[Wide Application]: The circular alarm clock is suitable for using at many places, such as bedroom, dormitory, bedside, desk, etc, will not disturb your classmates or colleagues. specification:Item Type: Circular Alarm Clock Material: Plastic Purpose: Suitable for office decoration, shelf decoration, gift giving Battery: 1 x AA (not included) Diameter: Approx. 10cm / 3.9in PackageList:1 x CircularAlarmClock