Improve air quality: Cool mist sprayers use ultrasonic technology to create a gentle environment by adding essential oils. Use it to improve your home's air quality, protect your family from overdrying seasons! It is suitable for living rooms, bedrooms, large rooms, lounges, nurseries, offices, etc. Relaxing ambiance: This electric diffuser is perfect for every home, office, yoga studio, so you can create a calm atmosphere. The device will purify and humidify the air so that you no longer suffer from dry skin and lips. The diffuser will create the perfect environment for you to breathe better and sleep better, relax and feel better than ever Long Standby Time: Our essential oil diffusers work alone without connection to a power source. After the battery is fully charged, it works for 2-8 hours, works smoothly and quietly, giving you a quiet and comfortable environment. High-quality materials: We only use the same materials safe and environmentally friendly plastics, as well as the most advanced production technology and strict quality control. With waterless auto-off function automatically turns off when water runs out, making it safe to use overnight.