Our captive butterfly illuminates at night for a delightful home addition or nightlight. Filled with synthetic green grass for a lifelike appearance, the acrylic orange butterfly glows brightly when the sun goes down. The mason-type glass jar charges by with the solar panel on the screw top lid. Contains an on/off switch inside lid. Hang it or place on a tabletop for a fun conversation piece. Measures 8cm in diameter x 13cm tall. Comes complete with 1 NiMH rechargable battery.