Sandisk Ultra A1 400GB Micro SD Memory Card with Adapter SanDisk Ultra A1 microSDXC cards are fast for better pictures, app performance, and Full HD video. Ideal for Android smartphones and tablets, these A1-rated cards load apps faster for the best smartphone experience. With 128GB storage, you have the capacity to take more pictures and Full HD video and capture life at its fullest. Built to perform in harsh conditions, SanDisk Ultra microSD cards are waterproof, temperature proof, shockproof, and X-Ray proof. The microSD card is also rated Class 10 for Full HD video recording performance and has a 10-year warranty. Reasons to buy Sandisk Ultra 400GB Micro SD Memory Card with Adapter Genuine Sandisk Memory Card 400GB storage Class 10 / U1 speed with A1 smartphone app rating 10 year Sandisk warranty Includes standard SD size adapter