Product: USB Flash Drives Model: USB Flash Drives UB657 Brand of usb flash drives: Show Life Material: Metal & ABS Color: Black usb, Blue usb, Red usb, Silvery usb; Capacity: From 1G to 256G Interface: USB2.0 or USB 3.0 Writing speed of 2.0 usb disk: 6-10Mb/s; Reading speed of 2.0 usb disk: 15-20Mb/s; Keywords: Pen usb flash drives, pen usb disk, pen usb drives, 2 in 1 usb pen drive ; product usage of usb flash drives: Copy data, save data, transfer data Customized logo on usb flash drives: Silk_screen, Color printing, uv printing ,Laser engraving; Packing box of usb flash drives: Poly bag, White paper box, PP box, Tin box, Gift box;