THIS WILL SAVE YOUR DOG'S LIFE - Vehicles will see your dog well in advance with this bright necklace - ALL THE TIME 2X TIMES MORE BATTERY LIFE THAN THE COMPETITION - At least 6 hours of illumination per 1-hour charge in flashing mode - 3 hours in steady mode. A charge that will last multiple walks. That's double the battery life than other similar products out there USER-FRIENDLY, COMFORTABLE, FULLY ADJUSTABLE - Change the light between quick flash, slow flash or steady mode with just a push of the button. One size fits most. Simply cut to the size needed. Fits dog's necks all the way up to 27.6" USB RECHARGEABLE & LIGHTWEIGHT - No hassle with replacing batteries and no extra costs LIFETIME GUARANTEE - Order now with peace of mind due to our Lifetime Guarantee. No catches.