The SanDisk 16GB Micro SD memory card is an A1 micro SD Card with a class 10 rating. It is well known for it's high speed of Read/Write operation which helps to load applications and operating systems faster in development board like raspberry pi. It has a durable design that can be used in a harsh environments. These SD cards are shockproof, temperature-proof, waterproof and X-ray-proof. These features defines the strength and durability of your memory card. It has a great transfer speed of 98Mb/sec which allow data transfer in a matter of seconds. You can transfer up to 1200 photos in just one minute.