Come and see our amazing products. The whistle which is lightweight, practical, cylindrical design, especially for field use. Multi-function together: whistle, compass, thermometer, magnifying glass, mirror, LED light small lights, small storage compartment. Original with a lanyard, field activities hanging in the neck is very convenient! Is a camping adventure, tourism and leisure essential supplies Temperature Resistant. Easily clean with water for renewable grip. Color is Army Green, Over 3000 pieces can make customized color. Pls confirm with us about the packing info, stock color and exact production time before placing your order.