Features: Power Supply: AC 100–120V 60Hz Whisper-Quiet Operation: Less than 28dB Material: BPA free safety for children and adults alike Run Time: 8–20 hours Zero Light Pollution: The lights can be turned off completely with sleep mode Auto Shut Off: When it’s water level is low or it’s tank is removed 3 Mist Speed Settings: High / Medium / Low Mist Settings Intelligent Sleep Mode: Automatically maintain a comfortable humidity level to let you sleep soundly Note:Please do not add water directly into the base. If the humidifier does not work properly, (e. g.: the humidifier can’t turn on, no mist coming out, etc.), most problems can be addressed by the follow instructions: 1.When cleaning or emptying the base or tank, be careful to prevent water from getting inside the air outlet. 2.2. When assembling the mist tube after cleaning, make sure it aligns with the mist outlet. Do not block the mist outlet. 3.3. Clean the transducer and insulation ring regularly to ensure that mist can come out properly. For a diagram of product parts, see the manual4. When cleaning your humidifier, follow the disassembly and reassembly instructions in the manual to ensure that mist can come out properly.