Our new LED collar lights will help you better track down and get a visual on your hunting companion. Ready to attach to a collar via the included rivets. They are waterproof, work in extreme cold, give a multi-directional light, and are visible over a mile. Two modes; constant on, or strobe. Available in white, blue, red, orange, and green. Operates on two (2) CR332 3V Lithium coin cell batteries (included).