Modern 3D Frameless Large Wall Clock, DIY Clock Home Decorations, black digital Material: Plastic, EVA and Metal Suggested size: Minute hand Length: 4.7" Hour hand Length: 3.4" With the adhesive on the back, you can stick it to the side of any other smooth surface. Power: 1 x AA Battery (Not included) The time can be resetted by rotating the wheel at the back.