Three-in-one Emergency Survival Function Whistle, Whistle, Thermograph Multi-function Whistle, Outdoor Multi-tool Security Whistle With Tether, Suitable For Canoeing, Boating, Hiking, Camping, Mountaineering, Fishing Feature: Material:plastic Color:A-rmyGreen Product Size:6x2.8x2cm/2.36x1.10x0.78in Package size:6x2.8x2cm/2.36x1.10x0.78in Product weight:18g/0.04lb Gross weight:18g/0.04lb Descrition: 3 function: whistle, Water proof thermograph, water proof Good plastic whistle and nylon neck lanyard 3-in-1 whistle for camping, hiking, cycling, skiing, any kind of outdoor activities, and can be also for Coaches, Instructors, Sports, Teachers…… You can use your favorite lanyard instead of nylon lanyard. bring no burden to your outdoor sports, with neck lanyard easy to get in any situation, it also can be tied to your backpack, belt and so. 3 in 1 whistle: convenient and practical tool for your partner and family. Package Content: 1x Whistle