Check the listing for details. Wholesale/Lot - ( 10 Pack ) USB Flash Memory Stick Thumb Pen Jump Drive U Disk. Condition: New. Listed at 11.00 USD. 10PCS 1MB 8MB 16MB 64MB 128MB 256MB 512MB 1GB 2GB 4GB 8GB 16GB USB Flash Drive Storage Memory Stick Thumb,lot Color: Mix Colors pecifications:1. USB connection,support Hot plug & Play.2. No external power supply .3. Support different types of os.4. Solid State Storage, Shock proof and electromagnetic proof.5. Durable data storage6. Hardware Requirement: PC with USB connection,Notebook,MAC7. Life:>1 million times 1.Some capacity not available for data storage. 2. Approximations:storage capacity results will vary based on file size, resolution, compression, bit rate, content, host device, pre-loaded files and other factors. 3. Actual capacity of USB 1.0/1.1 LOW SPEED 1MB: approximately 400KB 8MB approximately 7-7.6MB. 16MB approximately 14-15MB usb 2.0 64MB: approximately 61-63MB.128MB approximately 106-121MB.256MB approximately 240-250MB512MB approximately 480-505MB 1GB approximately 950-970MB.2GB approximately 1.7-1.8GB.4GB approximately 3.5-3.7GB.8GB approximately 7.3-7.6GB.16GB approximately 14GB-15GB. Tips: 1 Don't operate the files in the USB flash directly. It would better first copy the files to computer to operate and then copy back to USB flash after operation.2 To extend USB flash's life span, it would better to plug the USB flash drive down after operation asap.3 Before removing the USB, please delete the symbol on the bottom right of the PC screen to avoid missing files in the dish.4 Please do not format the USB frequently for it may damage the USB flash.