This revolutionary device combines cooling, humidifying, and purifying functions in one sleek package, ensuring a refreshing and healthier indoor environment. Perfect for the environmentally conscious Gen Z, it operates at just 80W, making it both economical and kind to the planet. With its 6-liter water tank, the Cool Chill Eco Air Cooler can run for up to 10 hours on medium speed before needing a refill. No, the Cool Chill Eco Air Cooler operates quietly with a noise level of ≤65dB, ensuring a peaceful environment. Yes, the cooler can be used without the ice packs. However, using the included ice packs can enhance the cooling effect, especially on hotter days.