1Automatically power off when tilted 45. Tilting 45 or falling will automatically power off smarter and safer. 2When the temperature of the heater is up to 75C, the machine will automatically cut off the power for protection 3The heater will work for up to 12 hours and the machine will automatically power off and rest. 4The fan will continue to operate for 30 seconds after shutdown to protect the PTC ceramic heating element. 5Low noise, silent breathing, as quiet as breathing, bringing you a low decibel environment. Item Type: Heater Material: ABS Gross Weight: Approx. 1074g/37.9oz Voltage: 220V Frequency: 50Hz Power: High End 650W Low End 450W Function: Two Speed Heating, Two Speed Wind Speed Fan Speed: High End 3300RPM/low End 2900RPM Noise: 40dB/38dB Air Supply Distance: About Approx. 1m/3.3ft Maximum Temperature of Air Outlet: 115 Size: Approx.14.9x15x14.7cm/5.9x5.9x5.8in 1 x Heater