atteries (2-#2032) NOT included These lights are made by the same manufacturer that makes signal lights for the military. They advertise a 3 mile range and I believe it!

• Dimensions & Sizing — They are unbelievable put 2 on your pet's collar and never loose him in the dark again.
• Reflective Safety — Applications: Emergency locator beacon Personal ID Marker Light (be seen by others) Child / Pet locator beacon Camping / Outdoors light Hunting light for marking game, trails & blinds Walking & Jogging positive ID light Home / Office Power Outages light & signal beacon Auto Breakdown light & signal beacon Specifications Visibility: Multi directional.
• Built Tough to Last — The Guardian Hunting Series Adventure LED Safety Light incorporates a durable base allowing for secure attachment to collars, straps, webbing, belts or a variety of other applications.
• Fetch & Retrieval Play — If you need a marking beacon to assist in game retrieval you can set this up from your shooting position to mark a particular angle or leave it your animal to assist in recovery after you have gone back to retrieve your ATV or pack frame from Camp.
• Safety Features — It also works as a safety beacon that allows you as a hunter to be seen from over a mile away.