se a good product but not thought through

I have the K480 keyboard used (condition excellent) get quite cheap on Amazon and still returned this product.
Why?
- The quality and feel are absolutely angemessen.Keine for the price question.
- The weight is substantial and surprisingly high with the result that it is hardly suitable for a mobile application but only at your desk or on the sofa.
This weight is again necessary and the advantage because it is also a 10 inch tablet very stable in the female strip firmly verbleibt- also a smartphone.
- The Bluetooth connection works very well and is very easy.
-Also The possibility 3 devices to store fixed is fine.

Bothered me have 2 things that certainly could have Logitech solved differently:

a) the keyboard fills up at pretty vague and does not respond to inputs particularly quickly.
it can get used to but.

b) but not to the A / Auschaltknopf on the back!
just a Bluetooth connection consumes more power. It is convenient to be able to easily turn on and off easily. This is exactly what is not with the K480! Only needs to be removed from the K480 necessarily the smartphone or tablet!
It will not happen or has difficulties z.Beispiel blind scan the back is almost impossible because this slider is more difficult-accessible.
Having me in the process, the smartphone fell down yesterday, I decided to return the K480. A Stürz the device (tablet or smartphone) can hardly be ruled out despite careful application especially when the USER K480 on the lap as laptop function.

Conclusion:
A good device, without a doubt, the proves not to be thought out properly to handle.