QY 4PCS Emergency Hiking Camping Survival Dolphins Modelling Whistle With Lanyard, Black Orange Green and Mud Color Made from high-grade plastic material with lanyard. No ball design,the unique dolphins modelling brings strong voice quickly. Blown and heard on land, up to 1/2 mile, and even underwater, up to 50 ft. Loud whistle, great for sporting events, camping, hiking and boating. Package including: 1 X Black, 2 X Orange, 1 X Green.