Relaxing: Designed to lift your mood and reduce stress in your bedroom, living area or office. Home lighting: Get an LED fantasy jellyfish lamp. Colour changing: Creates a super fun colour changing effect between five different colours - offering a fascinating atmosphere with life-like jellyfish. Powered by: USB/four AA batteries (not included). Dimensions: 10.4cm x 28cm. Led Fantasy Jellyfish Lamp | Living Social