Super equipment

Today I as usual fast delivery from Amazon get.
Package unpacked, checked all parts for their function and perfect everything.
Tried all the functions according to the manual for the radio and everything perfect.
Now dog snapped, left second device with my wife, plugged Km counter (IPhone with appropriate software)
and off we go. Our terrain is hilly with small wood pieces and scattered houses.
First paging after 500m. without problems. Even after 2km yet Crystal-clear reception.
Then it went downhill and lo and behold after 3-4km reception already with noise and bad.
Then I thought now it's over, but when I came to a hill, I could after just 6,4km again well received and
Send. Super I thought, and went on, but then in a wooded area was then end.

Bottom line is: Can 6,4km confirm in slightly hilly terrain.
Devices are well made.
All parts in the case are present and functioning.
Price-performance is justified.
Operation simple and well explained manual.

I prefer only one star from the specified due 10km reach I disputing.
About shock resistance and water resistance I can not say anything, but after it rich.
Batteries were full but why not work a charger AEG?
So:
I'm thrilled and would recommend these devices only.