<b>Product Paremeter</b><br> Color: Yellow<br>Power Supply: 2*AA battery / DC5V 1A<br> Working Frequency: 108kHz±10%<br> Continue Working Time: 4 hours<br> Automatic Working Time: Automatically turn off after operated 20min<br> Atomizing Ratio: <br> Speed level 1≥0.4ml/min)<br> Speed level 2≥0.5ml/min<br> Speed level 3≥0.6ml/min)<br> Average Particle Size: 4μm<br> Volume of Liquid Cup: ≥15ml<br> Liquid Residual: ≤0.1ml<br> Working Noise: ≤45dB(A)<br> Product Size: Max Diameter:55mm Height:150mm<br> Product Weight: 90g (without battery) <br><br> <b>Warning and Notices</b><br> 1.Please read the user manual carefully before using, follow the user manual strictly to assemble and use<br> 2.Please wash the liquid cup and mouthpiece carefully before using<br> 3.Do NOT share the machine or accessories with other people<br> 4.DO NOT use the USB adapter(only accept 5v1a) and Batteries at the same time