How to use it :
1: Open the back cover of the Samsung Galaxy phone
2: Stick the receiver card to the mobile phone's battery and the two protuberant touch points must touch the two recesses nextto the battery
3: Close the back cover
4: Place the mobile phone onto the Qi wirelesscharging pad (no included)

Note: The receiver needs to work with the Qi wirelesscharging pad(no included)

Specifications:
Compatibility: For Samsung Galaxy
Color: Black
Input: Self-adaptation
Output: 800mA
Charging time: 3.5 ± 0.5 hrs
Working life: Charge & discharge above 4000 times

What's in the package:
1x Qi Wireless Charging Receiver

pls choose the model u want， or mix all of them，  (for universal one， we will send half A and half B)