Quick and energy efficient heat. Mid-Wave infrared technology delivers soothing heat in just seconds. Energy smart for the Environment -- 94% of Energy Consumed Converted into Heat and Heat Produced is Not affected by Wind or Air. Multiple heat settings for optimum indoor or outdoor comfort. Offers 12,000 hour heating filament life - highest available. Safe, orderless heat. Fully weather proof. Offers optional stand (UTS) with safety shut-off.