A 30cm silver radio controlled wall clock from acctim that is tuned to the UK's atomic clock transmitter for precise accuracy. It also automatically adjusts to summer/winter time changes. The technology behind the movement of the hands is also highly efficient, increasing both battery life and cost savings.Radio controlled for split second accuracyAutomatically set and updatedFull numbered 12/24 hour dialSilver plastic rim and clear lensRequires 1x AA battery (not included)