Heating fans with battery has advanced PTC ceramic heating elements that offer 3S quick heating. Create more warmth and save more energy than normal heating. The thermostat switches off automatically when the temperature rises to 90 and the heating switches on automatically when the temperature drops to 75 . Built -in overheating protection and automatic tilting switch. Camping heating becomes more comfortable for your life with more security protection. Our ceramic heating fan is energy -efficient and quieter than the traditional, with a work noise as low as 45 dB. Heating fan energy -saving offers 3 heating levels (1800W/1000W) and a gentle cool air valve mode (15W), which can not only send you hot air in winter, but can also keep it cool in summer. with design of 120 up and down adjustment, our heating not only only can warm your hands, but so could warm your feet. Our heating fan energy -saving quietly will also work at night and will not disturb your sleep thanks to the light -free design. 3 seconds heat up quickly With a maximum output of 1800W, the electrical heater heats up to 70 C in 3 seconds and offers a pleasant and constant temperature. Continuous warming of the room area up to 20-35.