... .High thermal efficiency, warming fast & equably, no open flame PTC heater, mini desktop heater, mini portable heater New products for ... no open flame1. Product photos.2. Functions and features.1). PTC heater, mini desktop heater, mini ceramic heater.2). High thermal ... working noise.1. 220V/50Hz, 500W2. Using advance semiconductor ceramic PTC heating element3. Nomal warm air4. With ON/OFF switch5. Whole ...