Good flash drive, seems well built - PC Windows 8 Transfer speed when transferring music (to play in my car) averaged 10mb/sec. To fill it up took an hour and a half or so. Keyring hook feature is very useful, if you keep it in your pocket, careful with pocket lint getting into the usb plug as it has not got a cap.
For the person above where it is not recognised it seems you were unlucky as happens with all hard drives and flash drives. I'd recommend getting a techy friend to see if they can see the device in 'Administrator Tools' -- 'Disk Management' or something like that and then reformat it in whatever format is best suited for you (NTFS pc only, OSX mac, FAT32 slower but works on both). If you don't want to, I'm sure if you return it they will replace it without an issue. (It's why quite often I buy in-store).
Happy enough with it for the price. Works great in the car to play music from.