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Amazon.com : Battery Grip Kit for Nikon D600 D610 Digital SLR Camera Includes Qty 2 Replacement EN-EL15 Batteries + Vertical Battery Grip : Digital Camera Accessory Kits : Electronics
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Ron Martinsen's Photography Blog: Nikon D610 vs D600, 6D & 5D Mark III - Review Part II of II (Real World Shots)
Vello BG-N10 Battery Grip for Nikon D600 & D610 BG-N10 B&H Photo
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