SpecificationsOverall Height: (including bracket and chain) 47cm (18½in)Overall Width: 27½cm (10.8in)Overall Depth: 8.5cm (3.3in)Clock Face Diameter: 15cm (5.9in)Bell Diameter: 6cm (2.4in)The clock requires 1 AA battery (not supplied), and the thermometer displays temperature in both Celsius and Fahrenheit.