THE GREAT LACK keyboard is the lack of status LED for NUM and ShiftLock. Technically perfect sense to conserve battery power. In handling but you have to press button once ne in doubt, to find out if everything is now case insensitive. as NUM - Just looking button and see what happens. - Seen urges the keyboard more attention when writing.
THE MOUSE - surprisingly accurate and a very good "resolution". The handling is gut.Tastendruck and mouse wheel respond accurately.
RADIO: - is often criticized the coverage, or communication. - I can not say. No problems, no dropouts. After a long rest the mouse needs a few moments. I guess something like standby because of the battery.
The USB stick is long. about 2.5 cm and so longer than "other" radio sticks. - (! To the length I am silent but then .....)
CONCLUSION: As an external solution for laptop and / or consoles quite usable.
For the stress-filled office life or-second movement in gaming keyboard is rather the enemy, as an ally. But only because it's just a --KLEINE-- laptop keyboard.