OTG USB 3.0 Flash Drive, Truffol Dual Metal 16GB for Android devices, Samsung, HTC, Sony, Microsoft Surface, Tablets, Smartphones, Laptops Equipped with SuperSpeed (Super-Speed) OTG USB 3.0; tranfers files five times faster than with USB 2.0 Shock- and water-proof durable ultra-slim unibody zinc-alloy construction Cap always connected to flash drive with easy access; protects Micro-USB port Lightning-fast file transfer available now for your Android Mobile devices Unique ball chain design ensures you won't lose another USB cap again; Great for travel