Patriot Stellar Boost XT 64GB OTG / USB 3.1 Gen.1 (USB 3.0) Flash Drives Model PEF64GSTRXTOTG USB Specification: USB 3.0 Read Speed: up to 110MB/s Write Speed: up to 20MB/s Dimensions: 0.39 x 1.00 x 0.33 Weight: 0.02 lb. Electrical Outlet Plug Type: Consumer Electronics