1.The world's first one Smartphone U disk with 4GB memory and support max to 32GB TF card extend 2.smart phone usb flash drives

The first Smartphone U-Disk in the world, it is mixed ordinary U disk, MicroSD card reader, mobile external storage all in one

U-disk for Smartphone with OTG function

Specifications:

Size:58*19*10.5mm

Weight:10g

Capacity:4GB

Transfer rates:10MB/s

5 colors for option

Plug-and-Play

Product Specification:

Transfer rates: 10MB/s 

Dimension: 58*19*10.5MM

Weight: 10g             

Capacity: 4GB            

Compatibility: Android/Windows/OS X

        

4GB USB Flash Drives for Smartphone with Micro USB, USB port and TF card port