Features: 1.Support USB 2.0 and 1.0 versions. 2.Plug and play. 3.Read speed 8-20 mb/sec (USB 2.0), write speed 4 - 10 mb/sec (USB 2.0). 4.Support for Win98/ME/2000/XP/Vista/7, Mac OS 9.X/Linux2.4, no device driver. 5.Adopt high-grade materials, full color, uniform, quite bright, so the shopkeeper highly recommended, compared to ordinary one, shell material is more wear-resistant and flexible. specification: 1. Support USB 2.0 and 1.0 versions. 2. Plug and play. 3. Read speed 8-20 mb/sec (USB 2.0), write speed 4 - 10 mb/sec (USB 2.0). 4. Support for Win98/ME/2000/XP/Vista/7, Mac OS 9.X/Linux2.4, no device driver. 5. Adopt high-grade materials, full color, uniform, quite bright, so the shopkeeper highly recommended, compared to ordinary one, shell material is more wear-resistant and flexible. 6. Adopt the original imported A-level FLASH chip, the performance is very stable, different from the chip with poor or removable card. The general OEM version uses chips that are poor or disassembled. In comparison, the original chip performance is stable. You can go to the relevant website to know that the original chip price is much higher than other chips. 7. Three-in-one function, the bottom is a ballpoint pen, the top is a stylus available in all types of mobile phones only, the middle is pulled out is the U disk. s: Interface: USB 2.0 Size: Approx. 14*1.5*1.5cm/5.51*0.59*0.59in Data transfer rate: 480 MB/s Maximum reading speed: 30 MB/s Color: Black Silver Packge List: 1 * Pen Note: The computer display will have some errors, this is because the U disk is 1000 algorithm and the computer is 1024 algorithm. The normal situation chip 4G 3.77, 8G 7.75, 16G 14.7 or so, the display of the fine original is less, also because of the essence of the original Therefore, it is a normal situation, and buyers should not think that it is a quality problem.