Faster Speeds with UHS-ISamsung's Pro microSD Card lineup feature the highest-quality NAND and UHS-I support, offering Samsung's fastest speeds at up to 70MB/s Read and 20MB/s Write ideal for use in high-end Smart Phones and Tablet PCs.Durable and Specially Designed to Withstand Extreme ConditionsSamsung microSD Memory Cards are designed to withstand water, shock, magnets, temperature, x-rays and just about anything else.Water Proof and Safe