1) Adopt three waterproof ways to set up defense 2) The disk can be immersed in the water for a long time, meet level 8 standard, without any problem 3) Use hi-tech heat radiation material, metal enclosure used as heat radiator for protection and the heat radiation effect improved for at least 30 times, reduce elevation of temperature for electronic apparatus, prolong usage life and enhance work stability and reliability 4) Meet requirements of such industries as military and medicine 5) USB connection; support hot plug and play 6) No external power supply required 7) Support different types of OS 8) Solid state storage, shockproof and electromagnetic proof 9) Write/defect protection switch 10) Durable data storage (10 years' data retention) 11) Fast speed of write/read 12) Hardware: PC with USB connection, notebook, MAC 13) Operating system: Windows98/SE/ME/2000/XP/MAX8.6/Linux Core2.4 or above 14) Connection: USB1.1/2.0 15) Running current: <500mA 16) Standby current: <300mA 17) Write speed: USB1.1 >600Kb/s, USB2.0 1,500-3,500Kbps 18) Read speed: USB1.1 >900Kb/s, USB2.0 3,000-5,000Kbps 19) Capacity: 32MB-4GB 20) Life: >1 million times, > 10 years' data retention 21) Operating temperature: -40~70癈 22) Storage temperature: -50~85癈 23) Operating relative humidity: 5-98% 24) Storage relative humidity: 1-98%