My fear, the unit may not be appropriate for the intended purpose (inflating a queen size air bed of the brand Coleman), fortunately did not come true. Beriche over mangelde performance for me even not MENR understandable, because within four minutes, the rather large guest bed was inflated but pleasantly firm. The noise of the pump is roughly equivalent to that of an ordinary hair dryer and is thus not unangehm loud. Some getting used to was only the plugging of adapter parts - but eventually I mind the "System" and then stopped yet.
After completing Ersterprobung I was actually completely happy and the pump would have been a really great review - but then happened still something that made me remember the negative criticism of a fellow reviewers: when loosening the pump from the mattress fell the pump from a low height (about 70 cm) on the carpeted floor. The actually not too strong impact was made on the cable connector of the power supply. As a result, the mounting of the cable connector broke the connection disappeared into the interior of the pump housing. The breaking point revealed that it was a question of Low to plastic without any ruggedness. A "beautiful service" was impossible, because the housing is screwed. As a result I could only with brutal means the connector back "friemeln" outwards and create a lot of duct tape with a wonderful stopgap. Now looks likely to be as bad as the device that "previous speaker", but she still blows.
Conclusion: it brings the required power, but is a cheap product with a lack of robustness. If one expects stability because of the name "Mannesmann", you are probably disappointed quickly - regulates one's expectations on "rickety China goods", then you're on the right level and experienced no unpleasant surprises. Otherwise, treat the device always nice kid gloves, and everything will be fine!
