General Brand PX28 (4SR44/544) 6v Silver Battery PX28 B&H Photo
GP 4LR44 6v Super Alkaline Photo Battery PX28 3 Single Batteries - Camera & Photo Lithium - Watch Batteries - AA AAA batteries - Rechargeable Batteries - Discount Batteries - Shipped Free in US
Pentax 67: Four LR44 as replacement for 4LR44/PX28/A544/476A battery