The Tarantula is a 4.9 mW Green Laser with compact plastic case. It features Pre-set Geometric Patterns. Multiple patterns may be created by manual control . 3 Operation modes: Auto, Manual, & Sound Active . Fan Cooled . Includes Power Adapter (120V/60Hz DC, 9V UL) Specifications: . Laser Diode: 4.9mW, 532nm . Dimensions (LxWxH): 5.5" x 7" x 4" 140x175x106mm . Weight: 2 lbs. / 0.7 kg