Button Cell Battery, 42mAh, Silver Oxide
From Amazon
VARTA Button Cell Watch V395/SR57 silver battery 1-pack, button cell battery for watch in original blister pack of 1
Conrad Electronic
Varta Button cell SR57, SR926 1.55 V 1 pc(s) 38 mAh Silver oxide SILVER Coin V395/SR57 Bli 1
BatteryUpgrade
Varta V395 / 399 / SR57 Coin cell battery (Amount 1)