Self-cleaning Mode - 5 mins auto-shutdown 3 Nebulization Modes - different flow for various ages 3.5μm±25% nebulized to deep-lung for easily absorption Silent Operation (≤50dB), Portable Small Handheld for Travel One-button & LCD Display - easy to operate Packing Lists Nebulizer with Medicine Bottle & Dust Cap *1 Adults' Mask *1 Children's Mask *1 Mouthpiece *1 Mask Elastic Strap *1 USB-C Charging Cable *1 User Manual *1 Specifications: Material: ABS Power Supply: 3.7V 500mAh Built-in Lithium Battery Input Voltage: AC 100~240V, 50/60Hz (AC power adapter is NOT included) Output Voltage: DC 3~5V, 1~2A Rated Power: 1.5W±15% Nebulized Particles: 3.5μm±25% 3 Nebulization Rate: S: 0.1-0.25ml/min; M: 0.25-0.35ml/min; L: 0.35-0.8ml/min Battery Working Time: S: 180 mins; M: 150 mins; L: 120 mins Medicine Bottle Volume: Max. 16ml; Min. 0.5ml Medicine Liquid Temperature: ≤60℃ Noise: ≤50dB Product Size: 11.4*5.9*4.6cm / 4.5*2.3*1.8in Package Size: 13.5*11*6cm / 5.3*4.3*2.4in Package Weight: 205g / 0.45lbs