Watch Battery Murata 399 is a silver oxide high drain battery 1.55 V. Watch Battery 399 measures 9.5X2.7mm. Murata 399 is mercury free and has a capacity of 55 mAh.Since 2017, Sony watch batteries were manufactured by Murata. The very same high-quality batteries are available today—only under the Murata brand. Surpassing production of over 10 billion silver oxide batteries, Murata is recognized as The Global Leader in both the OEM and Replacement watch battery markets.
Interchange: Renata 399,Energizer 399, Maxell SR727W, Varta V399, Rayovac 399, Duracell D395/399, Timex W, Citizen 280-44, Seiko SB-BP, I.E.C SR927 (SR57).