For situations where time is of the essence, choose an Acctim Century 24 Hour Radio Controlled Clock (74457) - accurate down to a fraction of a second. A radio time signal from Anthorn in Cumbria helps ensure the Century's precision quartz movement is always ticking on time. There's a 24 hour track as well - ideal for workplaces that operate outside of normal hours. A thick glass lens protects the face from damage or tampering. Wall clock with radio control for perfect timekeeping Brushed aluminium case with numbered white dial Glass lens protects clock face With precision quartz clock movement Face diameter: 250mm Requires 1x AA battery (not included) Colour: Aluminium