NOTE: 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 this battery case when using headphones. This battery case does not have data transfer capabilities. Please use Wi-Fi or the Lightning cable that came with your phone to transfer data between your iPhone and a computer. The detachable top may be a little tighter when you reattach it after inserting your phone into the case. Why choose an EasyAcc® iPhone 6 battery case? You"ll no longer have to worry about your iPhone running out of battery. You won"t need to worry about adding too much bulk to your iPhone. You won"t have to worry about buying a no-name battery case that might be unsafe and/or environmentally unfriendly. You won"t need to worry about the battery case affecting your iPhone"s signal strength. You won"t have to worry about your iPhone being damaged if it"s dropped. You won"t need to worry about poor customer service as your battery case won"t be from an obscure brand. Specifications Capacity: 3200 mAh Input: DC 5V 1A (max) Output: DC 5V 1A Package Contents EasyAcc® Extended Battery Case x 1 Micro USB to USB Cable x 1 Audio Jack Extender x 1 User Manual x 1