8 inches Sounds Control Plasma Ball with Moving Blue Light Beams Material: plastic;glass Diameter: 8 inches / Power: AC 110V-220V Euro style plug Specification: Turn the switch to middle, the light beams will be controlled by sound rhythm. touch the ball, the beams follow with fingers. Note: The international shipment usually needs 15 business days. If you buy it as gift for the following Christmas, do place the order the sooner the better.