EasyAcc® - make it easy Why choose an EasyAcc® iphone 5s/5 battery case? NOTE: 1. This battery case has a capacity of 3000 mAh. Because of this, the size and weight of the battery case will be greater than those of battery cases with smaller capacities. The battery case has the same weight as the iPhone 5s, 112 g. 2. Most headphone plugs will be too short to reach the headphone jack when the battery case is being used. Therefore, we recommend using the audio jack extender that comes with the battery case when using headphones. The Safest Battery Case for Your iPhone Our grade-A lithium-polymer battery is certified by MFi, CE, FCC, and RoHs; comes with smart circuit protection; and has no possibility of exploding (unlike Li-ion batteries, which may explode under extreme circumstances). All of this is to ensure that the battery case can be used safely. The MFi-Certified iPhone Battery Case with the Largest Capacity At 3000 mAh, its capacity is 1.8 times that of an iPhone 5 battery, allowing it to extend the battery life of your iPhone 5 one and a half times. 3-in-1 Battery Case (Charging, Data Transfers, and Protection) The industrial-grade plastic used protects your iPhone from bumps and scratches, while the micro USB cable included allows you to transfer data while charging your iPhone as well as to charge both your iPhone and the battery case at the same time. Specifications Capacity: 3000mAh/3.7V;11.1 Wh Battery type: Li-polymer Input: 5V 1A Output: 5V 1A (max.) Changing time: 3.5 hours Dimensions: 146(L)*66(D)*16(T) mm Package Contents EasyAcc® Extended Bettery Case x 1 Audio Jack Extender x 1 USB Cable x 1 User Manual x1