The Nite Ize NiteHowl is a rechargeable LED safety necklace that slips over your dog's head and sits alongside its normal collar, giving a full 360 degrees of light so your dog is easy to see on night walks and in the garden. Press the button on the weather-resistant housing to switch it on, then choose red, green or blue, or the colour-changing Disc-O mode. The flexible polymer tube can be cut to size for a custom fit, from 30.5 cm to 68.5 cm (12" to 27"). It recharges in about 1.5 hours with a micro USB cable (not included) and runs for about 5.5 hours. It is a visibility aid and is not meant to replace a collar or to attach a lead.