NOTE: 1: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. 2: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. 3:The detachable top may be a little loose when you reattach it after inserting your phone into the case. 4：In low light environments, the battery case will become somewhat transparent when the power indicator is on and/or charging is occurring. This will not affect use of the battery case, however. 5：Hold the power button for 3 seconds to begin charging. The power indicator will come on and go off again in about 10 seconds, and your phone will display its charging status on its screen. Why choose an EasyAcc® iPhone 5/5c/5s battery case? 1:EasyAcc specializes in MFi-approved battery cases. We offer seven series of battery cases in a variety of colors for a total of nearly 50 models to choose from and are also providing two years of warranty right now. 2:You"ll no longer have to worry about your iPhone running out of battery. 3:You won"t need to worry about adding too much bulk to your iPhone. 4:You won"t have to worry about buying a no-name battery case that might be unsafe and/or environmentally unfriendly. 5:You won"t need to worry about the battery case affecting your iPhone"s signal strength. 6:You won"t have to worry about your iPhone being damaged if it"s dropped. Package Contents EasyAcc Extended Battery Case x 1 Micro USB to USB Cable x 1 Audio Jack Extender x 1