Product name: Green Laser Star Model No. JL-036 Dimension: φ 12× 165mm Battery: 2"AAA" (included). Laser Type: Visible laser Diode Output power: 5mW, 10mW, 20mW, 30mW, 50mW, 100mW, 150mW, 200mW. Output wavelength: 532nm Display various light beams and patterns. Creats lots of stars fill your space. Suitable for disco, clubs, KTV, pup, bar and family party. Safer to human and environment. It's truly amazing light show, you'll be surprised with the shooting star.