Mini usb flash disk,usb flash driver, compact flash cards,usb memory stick JD-ss108 Specification: 1.Product material: Acrylic 2.Dimension: length:56mm ,diameter:30mmm 3.Package dimension:120*53*38mm 4.Net weight of product:27.8g Gross weight:72.5g 5.the Red LED lights Will flash when used, shockproof, non-friable,can print single color logo on surface! If you are interested in our products,you can contact me!