Genuine Samsung Extended Battery Kit for Galaxy S3 - 3000mAh - Black
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Amazon.com: LCLEBM 520mAh Battery for Samsung Gear S3 Frontier (SM-R760), Galaxy Gear S3 Classic Replacement Battery for SM-R770,BR760,R765,EB-BR760ABE Gear S3 Battery with Professional DIY Repair Tools : Cell Phones & Accessories