【High Performance】 This SONY memory card supports the UHS-II standard, achieving a maximum transfer speed of 277MB/s. It is particularly ideal for shooting 4K videos and transferring large amounts of data. 【Durability】 As a feature of the Tough series, it has waterproof and dustproof performance, allowing for safe use even in harsh environments. It is especially suitable for outdoor shooting and under severe conditions. 【Large Capacity】 It offers 256GB of storage, making it possible to save a large amount of data. It is the perfect choice for those who want to store a lot of photos and videos. - Brand: SONY - Model: SF-M256T - Capacity: 256GB - Speed Class: UHS-II - Transfer Speed: 277MB/s - Write Speed: 150MB/s - Durability: Waterproof/Dustproof Unopened product. I am selling it because I don't use it. Please understand that it has been stored at home. Thank you for viewing.