Features: 1. Fine atomized particles 2. High silent core 3. Little liquid residue 4. Quantity can be adjusted as you like Product parameters: Name: Mesh Nebulizer Dimensions: 43mm(L)x58mm(W)x121mm(H) Power Source: DC 3V+10%(2"AA" Alkaline Battery) or lithium battery nominal voltage3.7V +20%(optional accessories), AC adapter (lnput: 100240 V, 50/60Hz, Output: 3V-5V DC, 1 -2A) Safety Grade: BF Power Consumption: Approx.1.5W Vibration Frequency: Approx.120KHz Nebulization Rate: 0.2ml/min minimum Medication Temperature: ≤41C ° Working Voice: ≤50dB Particle Size: 5um+25% Medication Capacity: 8mI maximum, 0.5mi minimum Battery Life: Nebulize continuously approximately an hour and a half. The device can be used for approximately 4 days if operating for 20 minutes a day by 2 "AA" Alkaline Battery, Lithium Battery can approximately operating above more than 60 minutes Guarantee Time: Main Unit 12 Months; Medical bottle 3 Months Operating Temperature: Environmental temp: 10C-40C Relative humidity :s80% RH,No Coagulation Air Pressure: (86. 0~106. 0)kPa Storage Temperature:Environmental temperature: -20C-55C Relative Humiditv: ≤80%RH. Air Pressure: 70.0~1060kPa Accessory: Aerosol Mask w/Nebulizer adult(option)AerosolMaskw/Nebulizer, infant(option), Mouth piece(option), Lithium BatterInstruction Manua, Certification, Warranty Card, Carry(option), Pouch