DURABLE & RELIABLE: Sarmert high endurance video card is able to withstand extreme temperatures, magnets, water and x-rays. Reliable operation in environments ranging from13°F (-25°C) ~ 185°F (85°C). HIGH-SPEED BACKUP: Transfer read speeds up to 80MB/s, writing speed 90MB/s, ensures smooth video capture. 10,000 tests to ensure data reliability and integrity, allowing you to store and transfer important files and videos with peace of mind. Quickly migrate all backed-up data without lag, saving you more time. LARGE STORAGE CAPACITY: Our Memory Cards offer 128GB storage capacity to store all your important files, photos, and videos to worry about running out of space on the dash cam, record and keep your precious memories at any time. HIGH COMPATIBILITY: Compatible with all Sarmert dashcams and most of the dashcams in the market. Ideal for video monitoring cameras, body cams, surveillance cams, 360° camcorders, cameras, Bluetooth speakers, drones, tablets, etc. NOTE: Because dashcams continuously loop recording, the performance requirements of Memory cards are higher than most electronic products (such as action cameras or DSLRs). The use of unqualified SD or third-party cards may not meet the normal working conditions of the Sarmert dash cam. Even force the dashcam to reboot randomly during recording.