Features: 1) Plane engine whistle 2) General whistle 3) 5-in-1 promotional gift with whistle, co Features:1) Plane engine whistle2) General whistle 3) 5-in-1 promotional gift with whistle, compass, thermometer, magnifying glass and key chain4) All these whistles are made of plastic 5) Any color and logo can be printed on them Inner packing: 1pc/polybag, 50pcs/polybag