Hyperion Samsung Galaxy SIII 4200mAh Extended Battery + Garnet Red Back Cover (Compatible with Samsung Galaxy S III GT-i9300, AT&T Samsung Galaxy S3 Samsung i747, Verizon Samsung Galaxy S3 Samsung i535, T-mobile Samsung Galaxy S3 Samsung T999, U.S. Cellular Samsung Galaxy S3 R530, and Sprint Samsung Galaxy S3 Samsung L710)**NOW WITH NFC** Extend your talk time on your Samsung Galaxy S3. 4200 mAh Battery Capacity (with Pebble Blue Extended Back Cover). Batteries use "A" Grade Lithium Ion Cells. NOW WITH NFC! Distributed by Hyperion Electronics Accessories. 90 Money Back Guarantee. Shipping same or next business day!