A highly visible light up safety dog collar with no need to keep replacing batteries as it simply plugs into a usb port and will give over two hours use the collar is water resistant so will cope with the rain and the battery pack can be detached if fido wants to go swimming made from super tough nylon with easy to open squeeze type buckle and a strong metal d ring to attach your lead the collar has two settings constant and flash a great high visibility pet product to keep your dog saf