Planning a trip to the desert? If so, and particularly if you're from one of the more moist parts of the world, you might find the dryness a little off-putting. While there's not much that you can do to increase the humidity while you're out and about, there is a device that's designed to improve the comfort level in your hotel room - the Air-O-Swiss AOS 7146 Travel Ultrasonic humidifier.

The 7146 utilizes a standard half-liter (17 oz) bottle of store-bought purified drinking water as its water source. It uses high-frequency vibrations to "ultra-quietly" convert that water into a cooling mist, at a rate that can be adjusted with a hand dial on the unit. It automatically shuts itself off once the water is used up, and indicates that it needs a refill by glowing red at the spout.

It also incorporates a transcontinental AC adapter with exchangeable plugs, which reportedly allows for its use across North America and Europe.

While it sounds like a reasonably clever product, it would be nice to know how long it can run on one bottle - would it be enough to keep your room comfortably humid throughout the night? If any readers have tried the device and know the answer, we'd be interested in hearing from you in the comments section.

The AOS 7146 Travel Ultrasonic humidifier is available via the company website, for US$49.99.

It can be seen in use in the video below.

Source: Air-O-Swiss