The extra-large radio-controlled MAULride 61RC wall clock comes with a battery and has a diameter of 61 cm making it perfect for large interior spaces such as halls, lecture halls, forums, and entrance areas. A keyhole slot on the back allows for secure wall mounting. - Legible from a distance of up to 50 m: 5.5 cm digit height - Battery operation, includes 1 x 1.5 V (AA) battery - Clock face Ø 51.5 cm, Frame height: 7.1 cm - Pleasantly quiet - Automatic synchronisation with DCF77 signal, automatic adjustment of summer/winter time Signal interference due to geological situations or metal constructions in buildings is possible. Signal range approx. 1500 km from the transmitter location. Manual adjustment is also possible.