哪款便携式加湿器的水箱容量最大？

The LEVOIT Classic 300S is a smart ultrasonic humidifier with a 6-liter top-fill tank, app and voice control, aromatherapy, and a night light. It suits bedrooms, nurseries, and medium-sized rooms where quiet operation and automatic humidity control are useful.

This top-fill 6L humidifier is designed for extended use and is listed with up to 60 hours of runtime. Its large tank suits users who want fewer refills, including bedrooms and larger living spaces.

The LEVOIT LV600S is a 6-liter smart hybrid ultrasonic humidifier with warm- and cool-mist settings, app and voice control, aromatherapy, and a top-fill design. Its large tank and coverage of up to 753 sq ft suit large bedrooms, living rooms, offices, and plant-filled spaces.

The LEVOIT OasisMist 450S has a 4.5-liter top-fill tank, warm and cool mist options, smart app and voice control, adjustable humidity, and dual 360-degree nozzles. It suits bedrooms, nurseries, offices, and small to medium living spaces where quiet operation and convenient humidity control matter.

The Dreo HM311S is a smart cool-mist humidifier with a 4L tank, app and voice control, Auto Mode, and a built-in humidity sensor. Its 28dB operation and 32-hour runtime make it well suited to bedrooms, nurseries, offices, and plant care in rooms up to 300 sq ft.