Whether your schedule prevents you from exercising your canine buddy during the day, or you just prefer carousing with him or her at night, our tennis ball-sized LED Dog Ball is the perfect exercise toy. Push the button, the LED light begins its steady glow, and you can both see what youâ€™re doing and have fun doing it. Perfect for romps in the yard after sundown, or, if youâ€™re both craving a little socialization, take it to the dog park at night, turn it on, and watch the interested human/dog crowd form around you both! Bright, durable, and water resistant, the Dog Ball floats and comes with two long-life, easily replaced batteries. Fun exercise toy used for throwing and retrieving in a supervised setting. This product is not a chew toy. Turn on and off by pressing and holding switch â€“ will not turn off when bounced.