Higher speeds - Transfer and capture content faster with read / write speeds of up to 170/90 MB / s. Ideal for recording 4K UHD video and burst photography on your DSLR camera. High speeds and improved performance will help speed up your workflow. MHS Speed ​​Class 3 (U3) and Video Speed ​​Class 30 (V30) Speed ​​Performance - Capture high resolution photos and videos without any interruption. Durable - For your peace of mind, the card has been extensively tested and proven to be waterproof, temperature proof, shock and vibration proof, and X-ray proof.