[Energy efficient space heater] The advanced PTC ceramic heating technology is more efficient heating than traditional heaters. Ceramic space heaters can produce abundant heat without open coils and are long-lasting. [Wide range oscillating function] One touch on the swing button to deliver 90° wide angle heat with auto oscillation, helps heat up space faster while keeping silent, ideal for small areas. [Over Heat & Tip-Over Protection]: the overheat protection system shut off automatically when part of it is overheated. the heater has dumping protection, if it is triggered by dumping, please straighten the heater by the hanging rope and restart it.