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Amazon.com: Synergy Digital Camera Battery, Works with Pentax Optio E40 Digital Camera, (Ni-MH, 1.25V, 2800 mAh) AA Rechargeable Ultra Hi-Capacity Battery : Electronics
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Amazon.com : Pentax Optio E40 8.1MP Digital Camera with 3x Optical Zoom : Point And Shoot Digital Cameras : Electronics
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