One very important customisation we make to the Unitas/ETA 6497 movement is to add a mechanical hack. This small lever assembly is visible under the balance and acts as a brake, temporarily stopping the watch when the crown is pulled out to set the hands. How else could you synchronise your watch with the six pips?
The six pips have been broadcast by BBC Radio since 5 February 1924. Originally a pair of Dent’s eight-day regulators (no. 2016) were used to generate the pips. These clocks sent a signal each second to the BBC, which converted them to the audible oscillatory tone broadcast. READ MORE HERE