12" Aluminum Modern Contemporary Wall Clock with Free Floating Concentric Black Face Dial Brushed Aluminium Alloy Casing; Plastic Back No ticking / Silent Sweep Dimension: 30.3 x 30.3 x 4 cm (11.93 x 11.93 x 1.575 in) Battery: 1 x AA Battery (NOT Included) Avoid use of heavy duty alkaline or rechargeable batteries.