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.This is calculation difference between manufacturer and our PC
4GB =approximately 3.5-3.8GB
8GB =approximately 7.2GB-7.5GB
The most reliable software to verify memory is H2testw.
Package deatail:1pcs usb flash drive As we buy in bulk it will be non-retail packaging.
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1.USB OTG allows you to connect USB device to your Android/Windows/Similar smartphone
2.USB connection,support Hot plug & Play.
3. No external power supply .
4. Support different types of os.
5. Solid State Storage, Shock proof and electromagnetic proof.
6. Write protection switch
7. Durable data storage
8. Fast speed in write/read transfer
9. Hardware Requirement: PC with USB connection,Notebook,MAC
10. Life:>1 million times
Working Temperature: 0 ~ 60 C
Compatible : Windows 2000 / XP / Vista / win 7, Mac 9.0 or above
Read speed: 10~15MB / second
Written speed: 4MB / second
No need external drive/power supply only plug in.
Case made by steel which protect your data inside.