Shipping is free. About this item: - Powerful mist output, reaching 300ml/h, for rapid humidification - 60-hour long-lasting operation with a 4.5L water tank - Smart auto constant humidity design with built-in sensor technology - Top-fill design and easy-to-clean detachable water tank - Ultrasonic technology ensures quiet operation below 22dB - Ideal for bedrooms, offices, baby rooms, and more - Night light feature for added comfort during sleep - Timed settings (1, 2, 4, 8 hrs) for convenience - Perfect gift for better sleep, relief from dry air, and overall well-being