Top 5 Hour Chevron Backup iPhone 4 4s Charger Electronic Supplies Car Accessory Popular Fun Inexpensive Unique Best Stocking Stuffer College Nurse Holiday Present Idea Him Her Husband Dad Cool Tech This portable iphone 4 & 4s charger is THE BOMB! Never be caught without power again! Adds up to 5 hour of additional talk time. Charges via USB to computer or power adapter. Compact size fits in pocket, purse or briefcase. For long plance flights, road trips or whenever you need some energy! Capacity 1000mAh; Input DC5.0V Limited supplies so get your's before they are gone!