power: 1 Watt Duration: 8 hours in first gear, 4.5 in second gear and 2.5 in third gear Benutzung What are the Glacier Portable Ac quality features? To date, no test has been carried out by Stiftung Warentest or Ökotest. But you can find many external tests and customer opinions on the Internet. The result of the tests was very positive. According to the manufacturer, the Glacier Portable Ac air conditioning system is a modern air cooler that can filter fine dust particles. It works with batteries and cools very effectively. The heat is dissipated through the unit and a pleasant cool air is produced. You should use a separate mobile air conditioner for each room. So you have fresh air and a pleasant coolness in the whole apartment in midsummer. The Glacier Portable Ac is not made in Germany, but in Hong Kong. According to the manufacturer you can rely on the quality and clean workmanship.