The 1-5um fine mist can penetrate deep into your respiratory system naturally. Helps provide vapor therapy for colds, flu, bronchitis, and other respiratory ailments. Skincare and moisturizing, nourishing hair, etc. Suitable for all ages, especially for children. Small and portable, you can take it. Create fine mist for better absorption. Ultra-low noise, easy operation for home and office use. Power: 2W Atomization rate: >=0.2ml/min Liquid cup capacity: up to about 8ml, minimum 0.5ml Working frequency: 120KHz +-10% Product material: ABS Powered by 2 x AA batteries (not included) or USB.