Keep your dog safe with the Ancol Rechargeable Safety Halo. It helps your dog been seen up to 500 metres. Ideal for walking at night, in areas of low lighting and during dusk and dawn. The collar is water resistant and has three light settings: slow flashing, fast flashing, continuous flashing. It's rechargeable by simply plugging it into a USB port. One size fits all, just separate the halo from the white clip, cut the tube to size and secure in place.