Eaget U90 USB 3.0 High Speed Capless Flash Drive,Water Resistant,Shock Resistant,Integrated Pure Metal Sealed Key Ring Design,Polished Mirror Appearance,Compact Size,16GB USB 3.0 high speed interface,Backwards compatible with USB 2.0. Pure metal to create high-polished mirror finish highlights high-grade taste,simple yet simple style exudes a charming metal luster. All sealed UDP kernel design combined with integrated appearance.Dustproof,waterproof,shockproof,anti-static,anti-magnetic,high temperature resistant. Transmission of large amounts of data to support the need for faster performance,The transferring rate will be impacted by your hardware device. Seiko build,Thumb size,light weight,can be placed on the chest,hang on a key chain,also on the wallet.