The walkie's not a game ... It may well be used PRM 446 or VHF marine (or in licensed spectrum). It also has the "codes", more properly called sub frequencies, technically referred to as CTCSS and DCS. Search lookup tables online.
The instructions can be found in French here:
file:///home/blois/.mozilla/firefox/k5skhczn.default-1392706058454/ScrapBook/data/20140816142910/index.html
It is sturdy (quality plastics, "frame" aluminum), compact (12x6 over the antenna 17cm). The battery takes longer. The menu is useful if you know you can reach the settings by returning the number. The keys and screen are backlit.
In short, a real job or security tool for real cheap.