The Netac P500 Extreme Pro 128GB MicroSDXC card is a high-performance storage solution featuring V30 and U3 speed ratings. With read speeds up to 100MB/s and write speeds up to 90MB/s, it's ideal for capturing 4K video and high-resolution photos on smartphones, tablets, and cameras. Key features: • 128GB storage capacity • Read speeds up to 100MB/s • Write speeds up to 90MB/s • V30 and U3 speed ratings • A1 app performance rating • 4K video recording capable • Compatible with smartphones, tablets and cameras The card features the A1 app performance rating for faster app loading on mobile devices. The V30 and U3 speed ratings ensure consistent high-speed performance for recording 4K UHD video. Built with durability in mind, the card is resistant to water, shock, temperature extremes and X-rays. For added versatility, it's backward compatible with UHS-I devices.