The Zenmuse X5R SSD is a high performance storage device designed for the Zenmuse X5R. It is essential when shooting video in a lossless format. Specifications Capacity: 512 GB Dimensions: 84 mm ? 38 mm ? 6.5 mm Weight: 33 g Operating temperature: 32? - 158? F (0? - 70? C) Storage temperature: -40? - 185? F (-40? to 85? C) Humidity: 5% to 95%, non-condensing