Modern 3D Heart Acrylic Mirror Wall Sticker Clock Decoration Decor Valentines Wall Decoration Clock Style Home Living Room Bedroom Decor Heart Clock Mirror Art Mural Wall Stickers 1 Set X Mirror Effect Wall Sticker with Clock (Included double sides adhesive tapes) Power: 1 x AAA battery (not included) Includes Industrial Velcro to support the heavy piece Perfect for family rooms or hallways DYI change it the way you desire on your wall The diameter of dial is about 13.5 cm, Easy and Convenient to use