You should definitely get a battery which is over 1.3v for the large wall clocks. The larger sized hands just take a lot of Electrical power so a better battery will previous more time. Lithium batteries are mentioned to very last a very long time in clocks. Expensive wholesaler, https://hoop-stand-price-in-bangl23556.diowebhost.com/93519522/examine-this-report-on-customized-handmade-wall-clock