This is a multi-purpose 3-in-1 whistle ideal for outdoor camping,hiking,or traveling. Designed with a built-in thermometer shows you the current surrounding temperature. Features a compass inside enables you to find the right directions when you lost in the forest. The key chain buckle clip allows you to hang your keys and ensures easy carrying. Imprint your exclusive logo, everyone who uses it will know your company name.Quantity over 10000 is the price of sea transportation.