The 377 watch battery, also known as SR626SW (IEC code SR66), is a 1.55V silver oxide button cell about 6.8mm across and 2.6mm high. The 376, also known as SR626W, is the same size. This page brings together every 377 and 376 battery we stock, all genuine Japanese cells from Maxell, Murata, Seiko and Seizaiken.
Choose the SW version for an ordinary analogue watch with a low power draw, and the W version for watches that use more power, such as models with alarms, lights or chronographs. If in doubt, replace like with like and match the code on the battery you took out.
UK delivery is free on every order.
