SAFETY LED DOG COLLAR - This light up dog collars is so bright and easily seen, keep dogs glow in the dark, no more worries about the dog safety when dog walking at night, to avoid some potential traffic dangers. THREE FLASH MODES FOR OPTIONS - The dog light up collar with 3 different flash modes: fast blinking, slow flashing and steady glowing, just changed by pressing the switch button. One charge can last a few walkers. RECHARGEABLE WITH MICRO USB - The light up collars for dogs at night can be recharged by Micro USB cable which is also included in the package. No hassle to replace the batteries. Charge 2 hours, can work for 3 hours-13 hours.