This fan page I've found in a large department store and bought cheap for just under 5. However, I've noticed before purchasing something negative: The Fan "wanders" when it is placed on flat surfaces, also the vibration of the engine over the feet of the fan is transferred to the tabletop which in turn leads to a steady hum. Both, however, can be remedied relatively quickly with subsequent fitting of anti-slip stickers. The attached two batery hold approximately 4 - 5 hours of continuous use, then comes the little one from the Pust. Other no-fire batery (yes! Rewe z.Bsp.) No longer hold. Pay now 2700 accus of Varta try ...
Conclusion, practically suitable for the road, but not for the office or in continuous operation.