Transfer read speeds up to 80MB/s, writing speed 70MB/s, ensures smooth video capture. Supports 4K and 1080P Full HD video recording and playback with UHS Speed Class U3 and Speed Class 10. (Performance results may vary based on host device, file attributes and other factors) Compatible with all Vantrue dashcams and most of the dashcams in the market. Ideal for video monitoring cameras, surveillance cams, smartphones, CCTV, body cams, drones, tablet etc. The Vantrue High Endurance Video Card is able to withstand extreme temperatures, magnet, water and x-rays. Works perfectly in environments ranging from 32?158? storage temperature of -13? to 185? Free SD Adapter included in the package, easy for video transferring.