Features: * Special designed external battery case for LG G4. * With built-in 3800 mAh polymer battery, the phone can be anywhere in the emergency charging, but also a good phone protective shell for your smart phone. * LED display and power switch, a timely reminder of the user to charge phone. * Polymer lithium battery, double your phone standby time. * Creative design, enjoy your phone without removing the power case. * High class material to protect your phone,charging and protecting and stand 3 in 1. * Integrated circuit design, effectively avoid short circuit overtime charger even under extreme conditions of wrong operating. * With smart switching and precise power display, to extend the life of the built-in battery. Specifications: 1.Lithium polymer capacity: 3800mAh The actual output capacity: 3500mAh 2.Battery type: Lithium polymer battery 3.Charging time: about 3Hours 4.Material: PC 5.Input: 5V 0.8A; Output: 5V 0.8A 6.Dimensions: 16.1x8x2cm 7.Net weight: 125g Package included: 1 x External Battery Case Note: The USB charging cable is not included!