meSleep wall clocks are made from sustainably produced MDF with the design digitally printed directly on the MDF. It won't fade or warp. Protected with a steel frame and a glass top. Great for bedroom, kitchen, living and dining room or your office Dimensions: 24.13cm diameter (9.5 inches diameter) Movement Type: Quartz, These wall clocks use a clock movement techonolgy that operates very quietly consume minimalistic amount energy thereby operating on 1 (one) AA Battery Number Of Batteries Required: 1, Battery not included.