Ultrasonic Personal Air Humdifier Technical features: Power consumption: 11W Humidity output: 70mL/h Running without a refill: 12 hours Dimensions: 8.6 x 6.2 x 8.7cm Operation noise level: 25dB Recommended bottle size: 200 to 700mL Features: Easy-fixing and taking-away bottle 2 types of bottle size adapters, fit most standard size PET bottle, it can be easily fixed on the main body or removed for refilling Safety design avoids overturning Extendable support to prevent the unit from overturning One-touch mist output on/off with low-water auto-stop function Supplied accessories for general use: 1pc universal adapter (100 to 240V AC, 24V DC) 1pc nylon tied travel bag 2pcs PET bottle size adapter