Specifications: - Designed for sports camcorders - tablets, and smartphones - the 256GB Professional 667x UHS-I microSDXC Memory Card from Lexar features a storage capacity of 256GB and supports maximum read speeds of 100 MB/s - This card has also been designed with the V30 Video Speed Class rating, which guarantees minimum write speeds of at least 30 MB/s What's in the box 1 x Lexar 256GB Professional 667x UHS-I microSDXC Memory Card with SD Adapter 1 x Limited 1-Year SD Adapter Warranty