Interface:USB2.0 Environment Temperature: -40C - +70C Storage Temperature: -50C - +80C USB Service Voltage: 4.5V-5.5V Storage Lifetime: More than 10 years Use A-class chip, can be erased repeatedly for 100,0000 times Operating System: Win98/ME/2000/XP/ Vista/win7 /win8, Mac OS 9.X/Linux2.4 or above USB connection:support Hot plug & Play. Easy to read and read in high speed ,No need drive/power supply only plug in Shock resistance, damp proof, lighting resistance, antimagnetic endure impact and knock of 3 meters fall Capacity:8GB/16GB/32GB Size:5.6x1.2x1.1x/(0.6+0.4cm