USB 2.0 Interface Ruggedized SIP (System in Package) Design, encapsulates & protects electronic components from water, dust, & debris. Flexible Protective Cover, shields USB (Universal Serial Bus) connector & withstands rough handling in stride. Large carrying ring for easy attachment to key-rings, carabiners, notebook binders or day planners. Available in a variety of trendy colors Lifetime limited warranty Password protection software available for download