The Nite Ize Petlit LED Collar Light is visible from 100 feet away and is a quick and convenient way for you to keep track of your dog in the dark. Made of durable plastic with a playful green paw decoration, the bright LED light is easy to activate with a simple twist. Also available in a pink crystal design. Compact, convenient illuminationBattery Run time: 24 HoursEasily replaceable 1 x 927 3V lithium battery includedWeather resistantSecure clip - easy to attach and remove from the D-Ring of a pet\'s collarTwist on/offDimensions: 1.73\" x 0.97\" x 0.62\" 44.02mm x 24.82mm x 15.87mmWeight: 0.18oz 5.00g