Toshiba's Exceria M303 microSDXC line up with Video Speed Class 30 (V30), a new speed class standard for video recording. to 256 GB, perfect for 4K video recording in the fastest and toughest situations as well as for capacity expansion for your smartphone. The new Application Performance Class A1 enables you to store and run Android applications on microSD cards at optimal levels. The series is made for hard conditions: waterproof, shockproof, X-ray proof and temperature proof. The SD adapter included with the M303 Package gives you a wide variety of use options.