Product Name: Hot Mini Electric Handheld Personal Mesh Nebulizer Model: :YS31 Type: CE Certification Steam Inhaler Humidifier Machine Atomizer for Children Adults Power adapter: 2*AA battery/USB cable Power : 1.5W Droplet particles (MMAD) : 2μm - 5μm Machine noise: <25dB Mhe average rate of spray: ≥ 0.2 ml/min Vibration Frequency: 120kHZ The remaining liquid: ≥ 0.7ml Accesories: Main Unit, Medical Bottle, Adult Mask, Child Mask, Monthpiece, Instructions, Warranty Card, Certification, Carry Pouch, USB Cable