The UV320 is slim and features a retractable USB connector that can be extended and retracted with a simple push of the thumb. The retractable connector eliminates the need for any protective cap. Capless quick-slide design: The USB connector is well-protected within the compact body, so no cap is necessary. It is pushed out with the thumb and retracted for transport. USB 3.1 for efficient data transfer: Thanks to USB 3.1, the UV320 can transfer data at speeds of up to 5 Gbps for convenience and efficiency from a compact drive with simple plug-and-play. It is also backward compatible with USB 2.0. A flexible design with a loop attachment: For added security and personalization, the UV320 features a loop attachment for attaching to a wrist strap or keychain of your choice. Specifications: - Capacity: 128 GB - Dimensions: 55 x 19.5 x 10.2 mm - Interface: 3.1.