USB3.0 interface, fast reading and writing speed, easy to transfer pictures, files, etc.Zinc alloy material, wear-resistant, shock-proof, anti-drop, long service life.Small size, does not occupy space, is equipped with a key chain, easy to carry and use.Equipped with a protective cap to effectively protect the data interface.Adopt stable master control protocol, no need to drive, plug and play.Whistle design, suitable for outdoor calls, signal transmission, sports training, etc.Supporting TYPE-C adapter, support mobile phone to expand OTG.Product name: U diskInterface: USB3.0Capacity: 64GBReading Speed: 80 - 100 mb/sWrite Speed: 20-50MB/sWhistle volume decibel: above 120 decibelsCompatible system: Win7/Win8/Windows XP/ME/Linux2.4 and so on.Applicable devices: Computers, cars, Bluetooth speakers, TVs and other devices that support USB expansion.About actual capacity:Capacity flash memory products are usually shipped according to 1MB=1000KB, 1G=1000MB, but the operating system uses binary operation 1MB=1024KB, 1GB=1024MB, so there is a certain difference between the display capacity and standard capacity memory products.(Due to different devices, read and write parameters are also different, please understand thank you )Colour: iron grayMaterial: metalPackage Contents:1 * USB flash driveOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.