... laser cutting machine 2 heads 1)double laser heads 2)DSP,USB interface 3)fabric, leather, paper,wood 4)CE,ISO CO2 laser cutting machine with 2 heads, co2 mini laser engraving machine ... :0°C~45°C,humidity :5~80percentWarrantyOne year for whole machine except of laser tube(2500hours)and lens Acrylic Laser Engraving Machine & Two Head