The PBL20 Plasma ball is a great decoration piece for your bedroom, living room, office or wherever! It will create a super cool scientific atmosphere. The sphere creates continuously changing light patterns through safe electrical discharges and will become more active if you touch the ball with your fingertips. Watch the stunning rays that vary with the rhythm of the sound. This ball increases the atmosphere and provides a lot of entertainment, especially when the light is off. Light effect with Magic Thunder Lighting Effect Size of the ball: 200mm Touch sensitive glass Selector switch for sound activation or random operation Mains adaptor supplied