These clocks were originally made as promotional items for retailers and to supply to military bases for use in the mess. The clocks are different to the usual wall clocks and make a great talking point in an office, workshop, garage, reception area etc. The wall clocks measure 22.5 cm (approx 9") and is in a strong and robust High Impact Polycarbonate case. This model is based on USAAF clocks used from the 1940's to 1950's and takes some design cues from the dial of the 1943 pattern A-11 pilots watches. The clock has a highly accurate quartz movement and silent quartz movement and a sweep second hand, which means you don't have to endure the annoying clicking sound every second which is something that plagues most quartz wall clocks. The clock is supplied ready to go with an AA battery.