Is halt Logitech ...

What can I say ... I use for years repeatedly Logitech products usually they are replaced because they want something "new" and have not because they are defective.
I can also only positive things about this mouse:
Range is approximately 3m pretty nifty.
The receiver is tiny and remains in the laptop.
The Unify option also works without problems my keyboard was immediately recognized (if you need it)
The mouse sets to "sleep" when not even sitting in front of the laptop.
Worth mentioning, I find the On / Off switch on the underside.
And last but not least because I have not the smallest hands this mouse with its "normal" size is optimal to handle.