Here is a great toy, very good suprise when openning the box.
The model is very detailed.
Ligths works while running forward.
While you turn there are also flashing ligths.
There are tow speed fast and low forward.
It needs only 3 AAA batteries.
Radio is easy to use.
I have 3 models of this toys with differents crystals.
you cannot change crystals. each toy has one inside...