Gentle & Even Mist: This handheld mesh nebulizer produces particles ≤5μm with an output of 0.3–0.5ml/min, offering consistent spray for daily use Work & Auto-Clean Functions: Long press the power button for 5 seconds to activate the cleaning mode—supports easier maintenance after each use Whisper-Quiet Performance: With sound below 25dB, it’s suitable for quiet home environments and nighttime use No Charging Required: Power via USB-C or 2 AA batteries (not included); cannot use both at the same time; no internal battery or recharge system Designed for the Whole Family: Comes with adult/child masks, mouthpiece, and USB-C cable—perfect for home or on-the-go Travel Mesh Nebulizer with Auto Clean - Quiet Handheld Atomizer for Adults & Kids -Compact, Dual Speed, Easy to Carry