Easy to add your favorite essential oil. Natural and Deep Brown grain color is prefect for your home decoration. The ultrasonic humidifier can hold up to 300ml water and run continuously for 10 hours. Automatic power off when water used up, which ensures safety. It can soften and moisten dry and chapped skin in winter. Use it to improve your home's air and atmosphere quality, cover the smell of pets or smoking, and protect you family from excessively dry air, microorganisms, allergens, dust, and more!