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If you control the unit using your hand/arm muscle, it's a bit hard to control but you should be able to use it without using much muscle once you've got accustomed to it with its manoeuvrability. Good suction power. A bit troublesome to make it portable, detaching the both ends and attach a shoulder strap and another nozzle etc. But overall, I recommend this unit.
When this vacuum is working its brilliant! I chose it as I need something very light weight due to severe neck/back pain. Suction is EXCELLENT. It does a great job sucking all dirt pet hair and feathers etc. Having birds inside means I use it everyday. I am now on my 2nd replacement one now. Out of 3 all have broken within warranty time with 3 different issues. I am VERY DISAPPOINTED Bosch is meant to have a reputation for being superior products. If all 3 did not brake early I would definitely give it a 5 star rating, but 3 seperate different problems results in a low 2 star review. I can't recommend it.