Disposable Battery, Alkaline
From Amazon
VARTA Batteries Electronics V4034PX/4LR44 alkaline battery 1-pack, Battery in original blister pack of 1
Conrad Electronic
Varta ALKALINE Spec.V4034/4LR44 Bli1 Non-standard battery 476 A Alkali-manganese 6 V 170 mAh 1 pc(s)