1,OEM/ODM usb flash drive, 2,Five years quality warranty 3,low price, small MOQ, 4,fast delivery, 5,low shipping risk 4gb usb flash drive, usb flash disk, pen drive1. Compatible with USB 2.0 and 1.0 specifications2. Memory capacity: 1GB/ 2GB/ 4GB/ 8GB/ 16GB3. Data retention: 10 years4. High reading&writing speed: 12MB/ s5. No external power source required 6. System Requirements: Microsoft Win98, ...