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PX640 Alkaline Battery
PX640 BATTERY ADAPTER For Use With 675/Lr44 Batteries **Uk Seller**Free Uk P&P £7.00 - PicClick UK
V640ALK PX640 1.5 Volt 335mAh Alkaline 2 Batteries - Walmart.com
Camera Battery Adapter
1Pc PX640 Battery Adapter for Film Camera Exposure Meter Mercury Electro 35 HM N|Battery Storage Boxes| - AliExpress