Samsung 7 Piece Kit - Three 16GB EVO Class 10 Micro SDHC up to 48MB/s Bulk Packaged with Adapter and 3 USB Extenders Up to 48MB/s transfer speed Great for Cell phones, Smartphones, Android Tablets, Tablet PCs. Great speed and performance for full HD video recording, high resolution pictures, mobile gaming, music and more. Water proof, Temperature Proof, X-Ray proof, Magnetic proof Compatible with devices with micro SDHC and micro SDxC slots.