Specification Model Name: SD-66X Capacity: 128MB, 256MB, 512MB, 1GB, 2GB, 4GB Interface: N/A Reading Rate(Appr.): Up to 66X Writing Rate (Appr.): Up to 66X Color: Black Unit Dimension (WxDxH): 3.2 x 2.4 x 0.21cmH Unit Weight: 2g