377/ SR626SW
Maxell Watch Battery SR626SW is a silver oxide low drain battery 1.55 V. This watch battery measures 6.8 x 2.6mm. It is mercury free and has a capacity of 24 mAh.
Interchange: Energizer 377, Renata 377, Varta V377, Rayovac 377, Duracell D377, Timex BA, Citizen 280-39, Seiko SB-AW, I.E.C SR626 (SR66)