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Amazon.com : Big Mike's D-LI109 Battery for Pentax K-R, K-S1, K-S2, K-30, K-50, K-70, K-500 Digital SLR Camera : Electronics
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Amazon.com : DSTE Replacement for 2X D-Li109 Li-ion Battery Compatible Pentax K-R K-30 K-50 K-500 KR K30 K50 K500 K-S1 K-S2 K-70 Camera : Electronics
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