flashing badge/pin,flashing gift,led pin flash with LED, operated with batteries .Rohs. Design and size is according to cust flashing badge/pin,flashing gift,led pin 1.flash with LED, operated with batteries .Rohs.2.Design and size is according to customers' request.3.a good promotional gift.4.3 models backside:pin,magnet,butterfly cap.5.material:PCB board+sticker+epoxy plate