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Storage Capacity :	128/256/512MB/1/2/4/8/16/32/64/128GB.
Interface Type:	USB 2.0/3.0.
Environment Temperature:	-40°C - +70°C.
Storage Temperature:	-50°C - +80°C.
Storage Lifetime:	More than 10 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.
Usb Designs:	Can be Customized logo .
Sample Lead time:	As usual 2-3 working days.
Production Lead time:	Without logo:2-3 days ,Customized logo: 5-7 days.

Usb Capacity :

Capacity flash memory products are usually shipped in accordance with 1MB = 1000KB, 1G = 1000MB computing,but the operating system using binary arithmetic 1MB = 1024KB, 1GB = 1024MB,so there are some differences between the display capacity and standard capacity memory products.

Thus, the real capacity is

4GB = approximately 3.6GB-3.8GB

8GB = approximately 7.4GB-7.6GB

16GB = approximately 14GB-15GB

32GB = approximately 28GB-30GB

64GB = approximately 58GB-60GB

128GB = approximately 110-120GB

There is calculation difference between manufacturer and your PC, please Google 'Memory card capacity' to get more information.