UHS Speed Class 3 (U3) is a new speed class standard that delivers smooth video recording to meet the demands of advanced applications like 4K and high-bit-rate Full-HD. Its guaranteed constant minimum write speed of 30 MB/s (240 Mbps) optimizes the video experience and eliminates dropped frames in both 4K and all-round video.
All Panasonic SD cards and micro SD cards feature the Tough & Safe design. They are accident proof against the 6 harsh conditions of Water, Static Electricity, Shock, Magnetism, Temperature, and X-rays. Also, a built-in-fuse operates to prevent the SD card and your personal host devices from being damaged due to unexpected problems such as overheating in an electric current.