The collar sends light through an integrated optical fibre to create full-length illumination that lets you keep an eye on your dog in the twilight.Take a torch with you too and you won\'t have to worry about walking a little into the evening - as long you have navigation in hand!360° visibilityIntegrated optical fibre and two high-powered LEDs provide full-length illuminationGlow or flashEasy push-button operationWater-resistantHigh-quality metal belt-buckle style closure for quick and easy adjustmentStrong metal D-ringRecharges in approximately 1.25 hours using micro USB cable (not included)Run time: 6.5 hoursSize fits a variety of dog breeds: 20\" - 24\" / 50.8cm - 61cm Size large dimensions: 26.14\" x 1.50\" x 0.79\" / 664 mm X 38 mm X 20 mm