FEATURE:

* Reading speed: 10MB-18MB/second
* Writing speed: 5MB-8MB/second
*Plug and play, no need to install any software
* Extra storage space for your Android device
* USB interface has higher speed and higher stability
* Lightweight, high-quality metal protection connector
* Solid state storage, shockproof, anti-electromagnetic
* USB service voltage: 4.5V-5.5V
* Storage life: more than 5 years
* Using A-grade chip, it can be erased repeatedly 1,000,000 times
* Operating system: Win98/ME/2000/XP/Vista/win7/win8, Mac OS 9.X/Linux2.4 or later
* USB connection: supports hot swap.
* Put the digital world in your pocket
* Speed varies depending on the type of file being transferred and computer configuration.

ABOUT CAPACITY:

128MB=approximately 110MB-120MB
4GB = approximately 3.6GB-3.9GB
8GB = approximately 7.4GB-7.8GB
16GB = approximately 14.2GB-15GB
32GB = approximately 28GB-30GB
64GB = approximately 58GB-60GB
128GB = approximately 110GB-120GB

This is a calculated difference between the manufacturer and your PC, please google""memory card capacity"" for more information.
Your PC says 1GB = 1073741824 million bytes, where the market defines 1 GB = 1 billion bytes.
Therefore, there is a certain difference between the display capacity and the nominal capacity of flash memory products.