Original concept but weight / power disappointing

This device is a kind dintermédiaire between a cordless screwdriver and a wireline drill.
Its concept is clever: after we have offered for 10 years screwdrivers / drills on batteries (more or less efficient and sometimes unloaded when you need the device) manufacturers appear to have had an epiphany: why not offer devices wired with very long son, that would permanently to have 100% of the available power and that would devolve relatively freely in the work area?
On paper, this machine with its neon over 6 meters, available in a soft case with various screwdriver bits, so had everything to seduce.

To put things compare with hardware I already own:
- A small screwdriver Bosch PSR 7.2 Li on batteries: This device allows to screw, but it does it very well (I'm used to screw men 50 m2 terrace in Douglas, certainly had to regularly recharge and pre-drill holes in the hardwood, but frankly my bluffed its effectiveness), while being very light: 544 g!
- A wired drill Black & Decker KR 705, 750 watts of power. Very good consumer equipment, necessarily quite bulky and heavy: 1,935 Kg off wire.

Between the two, so we have this screwdriver / drill Skil Wired, which has the advantage always to have all its available power, but weighs (too) heavy: 1,240 Kg off thread! This weight is all the more surprising that its real power is low. DAfter description Amazon this is 100 watts, but DAfter my calculations (230 volts x 0.9 A) this is rather 207 watts
Quoiquil be, this power is disappointing compared to the weight of Lengin, which in addition is relatively bulky, which can cause problems to mount furniture for example.
This is why only some wood bits are delivered with Lengin: you can in troubleshooting, drilling holes in wood or metal, but forget the concrete, drilling is not the vocation of Lengin.

By cons, this is the king of screwing / unscrewing, with its quick-release chuck, its 2-speed switch, its gate with electronic speed control, and its 20 torque levels that offer great precision not overtighten / drive the screws ...

In summary, if you are a big man and are looking for a precise and powerful screwdriver that will never get tired (eg if you have screwed dozens of wooden slats to a terrace), this is a very good solution.
If by cons you are a woman or you get tired quickly, you'll quickly find this machine too heavy Also, it will not be as versatile drill.
Mixed results so.