This case is specially design for sony xperia z ultra xl39h,it is made of ABS+PC material Product features: Battery Type: Polymer Li-ion battery Capacity: 4500mAh Input: 5V 0.8A Output: 5V 1A Charging time: 4.5h Charging cycle time: 500times Working Temperature: -10℃- +45℃ Weight: 0.15KG Color: Black,white,purple How to use: 1.When you get the case,it might not full power,It can be 30%,50%,so please leave it charge for 100% before use it 2.Charging through your usb cable (the USB charge ports is on the bottom of the case) 3.When the 4 led indicators are blue without twinkle,which tells us the case is finished charging 4.Slide your mobile phone to the power case and make sure it is well connected to the dock connector on the power case 5.Press on/off switch to active or stop the charging,check the screen to identify the charging signal.while the 4 led indicators show you the power balance: LED≤25%;LED≤50%;LED ≤75%;LED≤100% Package contain: 1*Power case 1*plastic box Maintenance method 1. To prevent batteries from damages, the batteries must be fully charged within a week after being used off 2. Please do not put the product to the high temperature.as the battery life will be dropped and battery will be damaged,for some plastic will be also ageing 3. Please do not throw or knocking them,as there might damage internal circuit boards and precision machinery 4. Please do not open it privately
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