USB 2.0 Industrial rated temperature rated flash drive. -40 to +85 degrees Celsius. Compliant with USB specification 2.0, No external power or batter needed, LED indicates usage and status of USB Flash Disk, supports low power mode. Supports partition management and lock disk function. Also, supports password protection for drive access security. Rated at 10 years data retention. Capacities ranging from 16MB to 4GB.