<b>JUBOTY Samsung Galaxy S9 Battery Charging Case</b><br><br> <b>Specifications:</b><br> Type:Li-Polymer.<br> Capacity: 4700mAh.<br> Voltage: 3.7V.<br> Input: DC5V-1A. Max Output: DC5V-1A Max.<br> Dimensions: 5.98 x 2.76 x 0.67 inches.<br><br> <b>How to use:</b><br> Let the galaxy s9 battery case full inserted into your phone.<br> Pressing and holding the round power button in 3 seconds,the battery case will charge your phone.<br> Pressing and holding the power button in 3 seconds again,the case will stop charging.<br> Advanced sync:You can synchronize your date to your macbook, PC and laptop and charge your phone at the same time without removing the battery case.<br><br> <b>Notice:</b><br> NFC is not supported.<br> You'd better use your original Samsung Charger or USB cable to charge it to avoid incompatible issue.If you charge the battery case and your phone at the same time,it will charge your phone at first.<br> Don't protect your screen,so do not misunderstand it as a screen protector.<br> Don't put the power case into the fire,high-temperature or water.Don't drop deeply.Don't self-disassembly or puncture.<br><br> <b>Package Includes:</b><br> one 4700mAh samsung galaxy s9 battery case<br> One user Manual<br><br> <b>12 Month Warranty</b><br> Customers are the most important for us.So please feel free to contact our JUBOTY customer service to help you if there is any problems.We promise that we will do our best to serve for each customer.