EAGET U66 USB3.0 USB Driver Multi-capacity 16\/32\/64 GB Waterproof Metal Ring Design Pen Driver Features: EAGET's innovative industrial design (patented)、 makes the best solution of personal portable storage. Sturdy metal design、 solid protection and exquisite design. One of the most durable and thinnest USB disk on the market. Fits on a key ring、 whenever and wherever get a storage device along with you. Fast data transfer rates up to 5GB\/s ( theoretical ). Protective edges on the connectors ensure that you'll always insert the USB disk properly、 keeping it usable and safe. Waterproof and shockproof design. Antistatic、 antimagnetic、 and heat resisting. Using high quality original flash chip、 high speed and more stable storage. Built-in encryption tool AES 256-bit to enhance data safety. Works with both PC and Mac computers.  Note:This Product Compatible With Android Smartphones (Not very well for IOS & WP )、 But Compatible With All Systems of Computer.  Specifications: Brand: EAGET Type: U66 Usb interface: Usb3.0、 compitable with usb2.0 Read speed: 35-90MB\/s Write speed: 10-40MB\/s ( vary due to different hardware and system ) Capacity: 16G\/32G\/64G ( optional ) Material: Metal Item size: 4.86 * 1.2 * 0.46cm \/ 1.91 * 0.47 * 0.18in ( L * W * H ) Item weight: 8.8g \/ 0.31oz Package size: 11.3 * 10 * 0.67cm \/ 4.44 * 3.93 * 0.26in ( L * W * H ) Package weight: 19.7g \/ 0.69oz Reminder: please kindly note the memo about the capacity for the storage products: 4GB=approximately 3.4GB-3.8GB 8GB=approximately 7.2GB-7.8GB 16GB=approximately 14GB-15GB 32GB=approximately 28GB-30GB 64GB=approximately 58GB-60GB  Package Included: 1 x Eaget U66 USB3.0 USB Disk