364 / SR621SW battery equivalent
Also sold as SR621SW. 1.55 V with a flat discharge curve — the usual choice for quartz watches.
Equivalents by brand
| Brand | Number |
|---|---|
| Renata | 364 |
| Energizer / Eveready | 364 |
| Maxell / Panasonic / Sony | SR621SW |
| Varta | V364 |
| Rayovac | 364 |
| Duracell | D364 |
| Philips | 364 |
| Bulova | 602 |
| Timex | T |
| Citizen | 280-34 |
| Seiko | SB-AG/DG |
| IEC | SR60 |
| IEC size | SR621 |
Also known as
SR621SWV364D364602T280-34SB-AG/DGSB-AGSB-DGSR60SR621SG1
What it fits
Slim analog watches, calculators, small electronics. Confirm the printed number or measure the old cell before you buy — a 0.5 mm height difference will not seat correctly.
IEC names encode chemistry and size. SR is silver oxide, LR is alkaline, and CR is 3 V lithium. The digits are diameter and height in tenths of a millimeter, so SR621SW is about 6.8 mm across and 2.1 mm thick.
FAQ
What battery replaces a 364?
Any of these are common equivalents: 364, SR621SW, V364, D364, 602, T, 280-34, SB-AG/DG. They are 1.55 V silver oxide cells, 6.8 × 2.1 mm.
Is 364 the same as SR621SW?
Yes — SR621SW is the IEC / Japanese-brand name for the same 364 cell.
What devices use a 364?
Slim analog watches, calculators, small electronics