If your watch is battery operated and has stopped working, the watch may simply require a battery replacement.
If you have an Automatic watch, they are wound by the movement of your wrist during wear. If you have not been wearing your watch please rotate the crown 30 full rotations prior to wearing.
If you need further support then please contact our UK Bulova customer service team via email service@citizenwatch.co.uk or or you can visit our UK Bulova service website www.citizenwatchservice.co.uk, and arrange to return your watch for assessment.