● Read Speed: 10MB -18MB/second

● Write Speed: 5MB -8MB/second

● USB 2.0 interface with higher speed and higher stability

● Portable, lightweight, high-quality metal protects the connector

●Environment Temperature: -40°C - +70°C

●Storage Temperature: -50°C - +80°C

●USB Service Voltage: 4.5V-5.5V

●Storage Lifetime: More than 5 years

●Use A-class chip, can be erased repeatedly for 100,0000 times

●Operating System: Win98/ME/2000/XP/ Vista/win7 /win8, Mac OS 9.X/Linux2.4 or above

●USB connection:support Hot plug & Play.

●Easy to read and read in high speed ,No need drive/power supply only plug in.

About capacity:

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

Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB

Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;

So there are some differences between display capacity and nominal capacity of flash memory products.