1、Automatically power off when tilted 45°. Tilting 45° or falling will automatically power off smarter and safer. 2、When the temperature of the heater is up to 75°C, the machine will automatically cut off the power for protection 3、The heater will work for up to 12 hours and the machine will automatically power off and rest. 4、The fan will continue to operate for 30 seconds after shutdown to protect the PTC ceramic heating element. 5、Low noise, silent breathing, as quiet as breathing, bringing you a low decibel environment. 1 x Heater Item Type: HeaterMaterial: ABSGross Weight: Approx. 1074g/ 37.9ozVoltage: 220VFrequency: 50HzPower: High End 650W Low End 450WFunction: Two Speed Heating, Two Speed Wind SpeedFan Speed: High End 3300RPM/low End 2900RPMNoise: 40dB/38dBAir Supply Distance: About Approx. 1m/ 3.3ftMaximum Temperature of Air Outlet: 115℃Size: Approx. 14.9x15x 14.7cm/ 5.9x 5.9x 5.8in