With the Stadler Form Oliver SF-O-015 Black, you can humidify the room hygienically. In the water tank, there's a UV light that kills bacteria. That way, 99.99% less bacteria in the mist. The water tank has a 6.8L capacity. You don't have to fill it often. When it's almost empty, you can fill it easily during use via the filling compartment. With this dehumidifier, you can humidify large rooms up to 60m2. Thanks to the 38dB maximum noise level, it's silent in use. With the extra silent night mode, you can also humidify your bedroom.