Watch button cell battery<br />Voltage: 1.55V<br />Also known as: 626 SB-BW SB-AW 280-72 280-39 177 V377 565 606 GP377 SR626W SR626SW SR66 D377 LR626 LR66 AG4<br />Diameter: 6.7mm<br />Thickness: 2.5mm<br />Chemical composition: Alkaline<br />