Blinking usb flash 1.Image files required: A.Image size: 26.5 x 12mm B.Image resolution: 300dpi C.Image file format: psd/ tif/ eps/ bmp/ ai/ jpeg 2.Logo is made by pc software and displayed on lcd screen, When there is light logo will blink thus to attract people's Attention 3.Usb 1.1/2.0 compliant, hot plug & play 4.Two layers pcb board, unique design 5.No external power is required, it's solar powered 6.Built-in memory from 128mb to 2gb available 7.More than 10years data retention 8.High transferring rate 9.Easily portable Packing: Gift box/blister/clamshell Retail bag/luxurious blister 500pcs/ctn Carton dimensions: 40.5 x 30 x 26.5cm G.W./n.W.: 16/15kg