Superior speeds—Transfer and capture content faster in Full HD & 4K UHD with transfer speeds up to 170MB/s. Ideal for action cameras and drones—High-speeds with UHS Speed Class 3 (U3) & Video Speed Class 30 (V30) ratings. Supports A2 app performance class—Expedite your workflow with faster application performance. Durable - For your peace of mind, the card has been extensively tested and proven to be water proof, temperature proof, shock and vibration proof and x-ray proof