The Firetoys 70mm Glow Balls look great and feel fantastic. The light from the single high powered LED is evenly diffused throughout this stage ball. The switch on these balls is robust and the LED is fully protected by the ball's body making these glow balls very durable. Each glow ball comes supplied with a full set of 3 x LR44 batteries. If you need any more, they are available at good prices on our website.