LEVOIT Oasis Mist Smart Cool and Warm Mist Humidifiers for Room Ultrasonic Top Fill Vaporizers for Large room with Auto Customized Humidity Oil Diffuser for Baby and Plants 4.5L LV450S White Already in bed and don t want to get up? Don t worry! Smart control method allows you to easily control the warm and cold mist humidifier from anywhere. Use the free Vesync APP in advance to remotely set the target humidity mist level and timer. This humidifier meets your needs all year round. The warm mist helps combat congestion and soothe sore throats in winter while the cool mist helps moisturize your skin in the summer. The top-fill design allows you to refill without disassembling the tank by simply opening the lid. Equipped with a 4.5L large tank can run for up to 45 hours giving you 5 nights of comfortable sleep without frequent water addition. Specification: Large Water Tank: 1. 18 gal / 4.5 L. Effective Range: 215-430 ft? / 20-40 m?. Perfect for bedrooms and nurseries! Run Time: Up to 45 hours. Ultra-Q