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.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: 12\"- 16\" / 30.5cm - 40.6cmSize small dimensions: 18.11\" x 1.50\" x 0.79\" / 460 mm X 38 mm X 20 mm