The 329 watch battery, also known as SR731SW, is a 1.55V silver oxide button cell about 7.9mm across and 3.1mm high. This page brings together every 329 battery we stock, all genuine Japanese cells from Maxell, Murata and Seiko.
The SW at the end of SR731SW tells you it is a low drain cell, made for analogue watches with a low power draw. Not sure which battery you need? Search any code in our watch battery chart.
UK delivery is free on every order.
