Used only a few times with a Z8. The mark visible in the photo of the card case is not a scratch, but the edge of the iPhone used for the photo. There are no issues with the operation. Product Details ⬇️ Capacity is 165GB, with a maximum read speed of 1,950 MB/s, a maximum write speed of 1,900 MB/s, and a minimum sustained write speed of 1,800 MB/s. It supports stable recording of 8K video and high-speed continuous shooting in RAW quality. Furthermore, it complies with VPG400 (minimum write speed guarantee for video recording: 400 MB/s) across the entire capacity, meeting the specifications required for professional video shooting.