3 colors light Laser Pen Shape USB 3.0 Flash Drive 4gb 8gb 16gb 32gb 64gb Usb disk USB pen drive Memory Stick pendrive U Disk Product discription: Storage capacity: 4GB/8GB/16GB/32GB/64GB/128GB Interface: USB 3.0 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. Package: 1*USB Flash Disk+1*Protection Bag