Features:

4GB built-in storage capacity 
Read speed is 10MB/S(max), write speed is 5MB/S(max) 
Waterproof, shockproof and stable performance
Conveniently stores all types of data 

General Specs:

Type SD card
Material Plastic
Capacity 4GB
Speed Rating CLASS 4
Read Speed 10MB/S(max)
Write Speed 5MB/S(max)
Package Details
Weight: 12.84 g 
Size: 12.5*7.5*0.5 cm