【Crystal Salt and Flame Light】-Crystal salt can better absorb the aromatherapy essence and retain the original fragrance. Crystal salt is rich in minerals and trace elements, which can help you relieve fatigue. Together with the realistic flame light can create a comfortable environment for you to improve the quality of your sleep and rest. 【Ultrasonic Atomization】-Ultrasonic atomization is more delicate, it can quickly spread the molecules into the air, so that it fills the whole room.It has a good humidification and aromatherapy effect.