Radio Controlled Wall clock ( MSF, UK & Ireland Version ), Automatic time change for Spring & Autumn and automatic time checks With world famous Shengbang Step MSF Energy A++ efficient Radio Controlled movement. Silver Aluminum Frame with clear Glass Lens , 30cm / 12-Inch Diameter White Dial with Black Numbers and black Hands. Clock Size: 31.2 x 31.2 x 4.3 cm / Requires 1 x AA Battery (not included).