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The Smart Humidifier 306S is a 3L ultrasonic humidifier rated to run up to 30 hours in sleep mode and cover about 300 sq ft with 360° mist at 250 ml/hr. Its 5μm mist is meant to add moisture without leaving furniture damp, and it runs at a claimed 28dB with adjustable lighting. An aroma tray takes essential oils. It suits bedrooms and small living rooms where quiet operation matters more than large-room output. Against bigger console humidifiers it trades coverage and tank size for a compact, near-silent design; owners rate it highly, though the 300 sq ft ceiling limits open-plan use.
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Lowest price we've seen: $29.95 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
Owners rate it 4.9 out of 5 across 252 ratings, praising its quiet running and long overnight runtime. Most criticism centers on the limited coverage and the need to refill more often at higher mist levels.
The Smart Humidifier 306S is an ultrasonic humidifier with a 3L water tank. In sleep mode it can run up to 30 hours continuously. It produces a 5μm fine mist that does not dampen furniture.
It covers up to 300 sq ft, with 360° mist output at 250ml/hr. It runs at 28dB and has adjustable lighting. An aroma tray holds essential oils.
