Features: 1) Automatic digital control system, convenient to operate 2) Automatic thermostat for constant temperature and changeable frequency, saves energy and money 3) Fresh air accessible through transom, no stuffy at all 4) Warranty: one year parts warranty against manufacturer defects 5) Portable, easy to install 6) Completely free standing 7) Plugs into home outlet 8) Beautiful and luxurious appearance, more exquisite crafts 9) Adjusts time and temperature as you desire through the digital control panel 10) Safety glass door and safeguard to users 11) Ergonomic design and comfortable backrest. Infrared package:3 cartons.