24 hours. The 24 Hour Headlamp is built for hunters who need a reliable, bright light to get them to and from their blind. With four modes including, 24-hour, 12-hour, and 8-hour white, and green, the headlamp will adapt to any need. Its rugged molded housing withstands various environmental conditions. The quick off feature quickly turns the light off without having to toggle through modes. An adjustable head strap will securely fit to every user s head. Product Features 24 hour, 12 hour, and 8 hour white, and green modes Rugged molded housing Quick off Electronic lock-out Three AAA alkaline batteries included Adjustable head strap Product Specifications Max Lumens: 215 Low Lumens: 7 Length: 2 3/8 Weight With Batteries: 3.5 oz Effective Distance: 100 yds. Battery Type: AAA Number of Batteries: 3 Battery Life On High: 8 hours Battery Life On Low: 36 hours Switch Type: Lock out:Push button Color: Black Number of Bulbs: 2 Bulb Type: LED Bulb Color: Green:White Body Material: Polymer Bezel Material: Polymer Water Resistant: Yes Waterproof: No Submersible: No Floatable: No