Extreme write speeds up to 140MB/s enable you to capture fast-action photos in fine detail and film in 4K UHD video for real life quality playback. And with super-fast read speeds of up to 200MB/s, the SanDisk ImageMate PRO microSD UHS-I Cards won’t leave you waiting when you transfer those high-resolution images and 4K UHD videos. With Class 10, UHS Speeds Class 3 (U3) and Video Speed Class 30 (V30), the SanDisk ImageMate PRO microSD UHS-I Card lets you capture uninterrupted 4K UHD and Full HD video. So, when you want to document outdoor adventures, weekend trips or sporting events in all their glory you can record every moment without skipping a frame. A2-rated, so you can get fast application performance for an exceptional Andriod smartphone or tablet experience. Plus, the card is compatible with microSDXC and microSDHC UHS-I supporting host devices – ideal for your action camera or drone.