This SanDisk High Endurance microSDXC Card is designed to record up to 20,000 hours of footage in a variety of environments, including extreme heat and freezing temperatures. It's rated Class 10, U3 and V304 so it has the speed you need to record in Full HD or 4K. The high capacity lets you record and save more video, and it can read speeds of up to 100 MB per second.-It is ideal for use in extreme temperatures for long hours of footage.-It has a capacity of 64 GB.-It can read speeds of up to 100 MB per second.-It's rated Class 10, U3 and V304.-This memory card can be slotted into your computer.-It is shock-proof, temperature-proof, waterproof and x-ray-proof.-It has a 2 year warranty.-It is designed to record up to 20,000 hours of footage and has the capacity to record in Full HD or 4K. :SandiskDescriptive Colour:BlackFlash Memory Type:SD CardProduct Dimensions (mm):14.99W x 1.02D x 10.92H mmProduct Weight (kg):0.0045 kg