Power supply: 1.5V * 2AA alkaline battery (not included) / USB cableEnergy consumption: approx. 1.5WUltrasonic frequency: 103 KHZ ~ 123 KHZStandby current consumption: <0.1 mAOperating current consumption: <500 mAMedicine capacity: 6 mlAverage nebulization rate: ≥ 0.2 ml/minParticle Size (MMAD): 3-5 μmAerosol emission rate: 0.087 ml/minSound level: ≤ 21 dBAutomatic switch-off: when medicine runs out / after 20 minutes of continuous operationOperating Temperature Range: 10°C to 40°C (50°F to 104°F)Operating humidity: 10-95% relative humidityStorage temperature range: -20°C to 50°C (-4°F to 122°F)Basic package: main unit, nebulizer unit, adult mask, child mask, mouthpiece, pouch, USB cable, rubber protective capProduct size: 6 * 5.5 * 13 cm