One bounce of the glow streak dog ball is all it takes to light it up for endless games of fetch even in the dark motion activated bounce the nite ize glowstreak dog ball and itll light up for 10 minutes 5 minutes at constant and 5 minutes flash giving you long enough to play with your dog and exercise them on winter or night walks available in red led or disco colour change these sturdy balls are made from robust rubber with tactile ridges so that theyre easy to grip for your dog and