Watch calculator batteries silver oxide Button cell no mercury designed for use on continuous low drain. Replaces 399 sr27sw w tr927w duracell d395 maxell sr927sw panasonic sp395 sony sr927sw timex la toshiba sr927sw and varta v395. 9.5Mm diameter x 2.7Mm height. 52 Mah to 1.3 Volt. 1.55 Volt carded.
