... , iPhone 3G,3GS & iPod Touch 1900mAh Emergency Power Pack for iPhone 4, iPhone 3G,3GS & iPod ... Touch 1900mAh Emergency Power PackDescription: The Emergency Power Pack is very light, compact, easy ... 1900mAh built-in lithium ion rechargeable battery - Provides extra power for iPhone 4, iPhone 3G, iPhone 3GS, iPod ... usage time - Recharged by iPhone/iPod charger - Fully recharges in 4 hours