With SanDisk Ultra UHS-I cards, you benefit from faster downloads, high capacity and better recording performance. Take advantage of ultra-fast reading speeds of up to 48MB/s and save time transferring photos and videos from the card to your computer. SanDisk Ultra UHS-I cards are waterproof, temperature resistant, radiopaque and shock resistant - Great choice for compact camera class 10 for Full HD video recording (1080p)-Excellent video recording performance & ultra fast recording speed - Super fast transfer speeds of up to 48 MB/s Up to 48 MB/s reading speed; write speed is lower. Based on internal testing; performance may be lower depending on host device. 1 MB = 1,000,000 bytes.