Product name: Leather USB Model No. JU-003 Memory capacity: 64MB/128MB/512MB/1GB/2GB/4GB/8GB/16GB Material: Metal + Leather materials. USB interface: USB1.1/USB2.0 compliant. Hot plug-and-play No external power is required. Data Retention: Over 10 years More than 100000 times of write/read cycle endurance. Computer system requirement: PC/AT or compatible desktop or notebook or Mac computer with USB port. Operating System: Windows98 SE. Windows /Me / 2000 / XP/ Mac OS9.0 or above/linux kernet 2.4 or above.