Wifi card reader for Andriod IOS Windows system

How to use it:(following is the simple step to teach you how to use it)

1, Plug a micro sd card into the wifi card reader.

2, Plug the wifi card reader on the usb power adapter(or power bank or computer or car charger in your car) 

3, Open your device wifi(smart mobile phone or ipad or note book),searching the wifi card reader singal and connect it.(when you use it frist time pls download the APP from App store or Google store markets).

4, Open the APP in your device and then can tranfer and sharing the date from the micro sd card..