Product description&lt Material: metal + quiet movement&lt Color: white, green, black&lt Alarm clock size: 4 inch 17 * 12.5 * 6cm&lt Battery type: 1 * AA 1.5V (not included)&lt Operating voltage:> 1.4V&lt Scope of application: living room, bedroom, kitchen, clinic, office, etc.&lt Note: Please select the appropriate alkaline battery for use.&lt Scope of delivery 1 * alarm clock&lt 1. Loud alarm: The alarm clock is very loud, you definitely can't overhear it - also perfect for deep sleepers. Very easy operation with only two buttons for setting the time and alarm time.&lt 2. Noiseless: No annoying ticking, the creeping second hand creates a quiet sleeping and working environment.&lt 3. Good legibility: 4-inch dial, stereoscopic numbers, black and white dial has a good contrast, so that the time can be clearly read.&lt 4. Night light function: The pleasant lighting helps you to read the time in the dark. Simply press the light button to activate the LED lighting on the dial.&lt 5. User-friendly design Our wind-up clock is easy to use, there are only four buttons on the back: two rotary knobs for setting the clock and the alarm, an alarm switch for switching on / off and the night light button for displaying time in the dark, very easy to use.