Opened but never used. I purchased this, but it didn't fit the product specifications, so I'm selling it for half the purchase price. Purchased at a domestic electronics retailer. I will include a copy of the receipt if needed. Brand: Lexar Flash Memory Type: SDXC Card, SD Card Memory Storage Capacity: 512 GB Compatible Devices: Camera Features: Dustproof Read Speed: 160 Megabytes Per Second Designed for DSLR or mirrorless cameras, the Lexar Professional 1066x SDXC UHS-I Card SILVER Series allows you to quickly capture and transfer high-quality photos, including Full HD and 4K UHD video, with read speeds up to 160MB/s and write speeds up to 120MB/s. These cards significantly accelerate your workflow from start to finish, allowing you to maximize your creativity. This card utilizes UHS-I technology, achieving a maximum read speed of 160MB/s1, making it easy to transfer high-quality photos and 4K UHD video. This card is Class 10, UHS Speed Class 3 (U3), and Video Speed Class 30 (V30), providing the performance you need for faster and longer shooting. Never miss the action. With the Lexar Professional 1066x SDXC UHS-I card, you can capture high-quality images and clear Full HD and 4K UHD video of extended lengths with write speeds up to 120MB/s. The Lexar Professional 1066x SDXC UHS-I Card SILVER Series, which adopts the UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) standards, captures all the action in continuous burst mode shooting. These cards provide the performance and durability you need to capture and store valuable data in a variety of situations. Product Specifications Brand: Lexar Product Size: 15 x 4.4 x 11.5 cm; 2 g Item Model Number: LSD1066512G-BNNNG Product Dimensions (W x H): 15 x 4.4 x 11.5 cm Item Weight: 2 g