The Green Slim incorporates a Casio developed and patent pending Hybrid Light Source which combines Laser and LED technology for amazing high brightness and can last up to 20,000 hours. The Green Slim XJ-A240 is an earth-friendly, low maintenance, 5 pound projector with features such as a 2X Power Zoom Lens making it a great portable projector. The Green Slim XJ-A240 Projector eliminates the need for a short life (3000 hours typical) mercury lamp and is economical to operate.