No need to waste money on batteries with this fantastic LED light up dog collar, it simply recharges using a microUSB connector (lead provided). Available in a wide range of colours this collar will let your dog be seen on dark nights while out walking. Featuring three light settings - slow flash, quick flash & steady glow, easily changed with a button on the collar. This collar comes in one size, and can be easily cut down to the required size. Please note this collar should not have a lead attached, however it is lightweight and slips easily over your dogs head and can be used with your regular collar.