EZOPower Black USB Wall Travel Battery Charger for Samsung Galaxy S IV / S4 GT-I9500 (AT&T, Verizon, T-Mobile, Sprint) Compatible with Samsung Galaxy S IV / S4 GT-I9500 (AT&T, Verizon, T-Mobile, Sprint, Cricket, US Cellular) The battery charger rapidly charges your spare Samsung battery giving you extended time for talk, text or email. The compact and durable design makes it convenient to charge your spare battery at home or in the office. Input:AC 100~240V. Output:DC 4.2V. Package Includes: 1 x EZOPower Battery Charger