The Aaira humidifier is sleek looking, a nice size, but not too heavy. I like that it was extremely easy to set up. I removed the protective packaging and added water and non iodized salt, then simply hit start! It has a pleasing chime when menu items are pressed and when it turns off. You can program it for 2, 4, or 8 hours. It holds a lot of water, up to 2500ml. When it's on, there are 3 modes. The lowest is nearly silent. The highest sounds like a high end fan. We feel the air quality in our room is improved using this.