THIS WILL SAVE YOUR DOG'S LIFE - Vehicles will see your dog well in advance with this bright collar - ALL THE TIME. USER-FRIENDLY, COMFORTABLE AND FULLY ADJUSTABLE - Change the light between steady mode, rapid flashing or slow flashing with just 1 click. Thanks to the easy-to-use clips the LED Dog Collar is no hassle to put on. The USB rechargeable battery (cable included) gives 5 hours of illumination per 1-hour charge. Well-constructed and sturdily built.