Maxell Watch Battery SR41SW is a silver oxide low drain battery 1.55 V. Watch Battery 384 measures 7.9X3.6mm. SR41SW is mercury free and has a capacity of 45 mAh.
Interchange: Energizer 384, Renata 384, Varta V384, Rayovac 384, Duracell D384/392, Citizen 280-18, Seiko SB-A1/D1, I.E.C SR736 (SR41)