1,Flashing style 2,fun for using Features:1, LED whistle2, Size:6.5*2.6*3.5cm Weight :10g 3, Led color :Red ,blue ,green .4, LED quantity:3 pieces(AG10)5,Cover color:Any color6,Mateial:ps 7,it has on/off buttonLogo :1, logo printing is available2, Samples with your logo lead time 5 days .How to activates:1,Press the button below and turn it flashing2,place the whistle steady in the mouth3,blow it ...