[Protect and Discover Your Dog] LED Dog Collar 2.0 is very bright in the dark, so it will greatly improve your dog’s safety at night. Protect your dog from cars, bikes or runners. No matter how dark the dog’s hair is, it is ideal for walking, hiking, camping. [2022 New Technology] In order to improve the brightness of this collar, we designed a guide tube of the ultra-thin light that improves light transmission efficiency and reduces thickness, making this light collar 50% brighter than other collars and easier to adjust. [Rechargeable Long Life Battery USB] no longer waste time changing or charging frequently. It is possible to charge from any device (other than a fast charger) via any micro - USB cable, for example: computer, car charger, charger, power supply, etc. 1.5 hours when fully charged, duration > 12 hours (steady), fast flash > 14 hours, slow flash > 16 hours. [Fully Adjustable, Daily Waterproof] No more wasting money buying necklaces wrong size. Each Collar has a large