44.02mm x 24.82mm x 15.87mmWeight: 0.18oz | 5.00g_ | 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 jewel crystal decoration, the bright LED light is easy to activate with a simple twist.__ Also available in a green paw 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"