flashing badge,promotion gift,led badge flash with LED, operated with batteries .Rohs. Design and size is according to custom flashing badge,promotion gift,led badge1.flash with LED, operated with batteries .Rohs.2.Design and size is according to customers' request.3.a good decoraion on clothes.4.a good promotional gift .5.have 3 kinds of backside:one is pin,one is magnet,one is butterfly.