UNIS MicroSD Card offers cutting-edge 3D TLC flash technology, providing high-performance storage solutions for smartphones, tablets, dash cams, action cameras, surveillance cameras, drones, and more. With fast data transfer speeds, this card supports 4K video recording and large file storage. The UF100 series offers: 32GB: 100MB/s read, 30MB/s write 64GB: 100MB/s read, 30MB/s write 128GB: 100MB/s read, 45MB/s write Key Features: High-speed write up to 45MB/s for quick data transfer U3 rating for smooth 4K video capture and large file transfers Durable and reliable: waterproof, shockproof, anti-static, and temperature-resistant (-25C to 70C) Compatible with various devices, the UNIS PRO MicroSD Card is designed to enhance your storage experience. 128GB capacity supports up to 20,000 hours of recording (tested in controlled conditions) The actual appearance shall be subject to the video content.