Suitable for Nextbase Series 2 Dash Cam to capture footage in full HD quality. With a read speed of 100MB/s, and write speed of 70MB/s, it is a U3 ultra high speed card, which is required for 4K recordings and dash cams with rear camera modules attached. Records approximately 8hrs of HD footage before the dash cam loops over and overwrites previous recordings (or 4hrs if using a rear camera module). Supplied with SD card adaptor, allowing easy footage transfer onto a PC or Mac. U3 UHS Speed Class Read Speed: 100Mbps Write Speed: 70Mbps Transfer Speed: 60Mbps Compatible will all Nextbase Dash Cams U3 Ultra High Speed Includes Micro SD Card Adaptor U3 UHS Speed Class Read Speed: 100Mbps Write Speed: 70Mbps Transfer Speed: 60Mbps Compatible will all Nextbase Dash Cams U3 Ultra High Speed Includes Micro SD Card Adaptor