Stitchway UltraPower 1900 mAh Backup Battery Charger for iPhone 3G, 3GS, 4, 4G, iPod, and iPod touch - External, Portable, Rechargeable (White) 1900mAh portable iphone battery charger Recharge from dead to full in 2-4 hours Rechargeable at least 400 times. Special Circuitry to protect from overcharging Weighs only 2 oz, plug directly into phone COLOR WHITE