spray for 10 hours, and Interval sprays for 20 hours to auto-shutoff. It can be restarted to continue using after power failure.[Night Lights]This moon lamp designs with 3 colors lighting modes. All of the colors can be changed by touch the top button.[Keep You Healthy]This personal humidifier can not only help adjust dry air in the air-conditioned room but also moisturizes your skin, relieves nasal congestion, and purifies the air, keep you healthy all the time.[Quiet]The mist humidifier only creates sound less than 36 dB which is very quiet, giving you a perfect sleep.Specifications:Types: With Battery(3.7V, 240mA);Without Battery (Optional)Light Color: White;Warm White;YellowMaterial: PVC, PP, Electronic ComponentStyle: CasualCapacity: 880mLSpray mode: Continuous mode, Intermittent mode(Spray 3s, stop 3s)Spray Volume: 25-35mL/HInput: 5V/1AWorking Current: 550mAWorking Power: 2.7WWorking time: 25-35hNoise: 36dBUsage area: 30-40㎡Occasion: Home, Hotel, SchoolItem diameter: 13cm / 5.11inchPackage Size: 15.5*13.5*13.5cm / 6.1*5.31*5.31inchPackage Weight: 400g / 0.88lbPackage List:1 * Mist Humidifier1 * USB Cable1 * Wood Bracket1 * Cotton SwabNote:1. Before using for the first time, please put the cotton swab into the water for 3-5 minutes to make the water fully penetrate it.2. Please use mineral water (mineral water, tap water, etc.), pure water is not recommended3. It is not recommended to add essential oils, because adding synthetic essential oils will reduce the working life of the humidifier; if adding essential oils, please clean the cotton swabs and nozzles thoroughly after use to reduce losses.4. The lithium battery can only power the night light. If you want to use spray, please plug in the power adapter.