Designed to record for up to 40,000 hours, the SanDisk High Endurance microSD card gives you the peace of mind that your dash cam, home monitoring or security system will capture crucial footage when it happens, recording and re-recording worry-free. It's built tough too - ready to record in extreme heat or freezing cold, and it's shockproof, waterproof and x-ray proof. Rated Class 10, U3 and V304, it has the speed you need to record in Full HD or 4K. A capacity of 512GB lets you record and save more video, and read speeds of up to 100MBs lets you transfer that footage fast.