How to find radio serial number on 2016 CRV with a touchscreen

thanks but the touchscreens don't let you hit 1 and 6 at the same time. Someone told me that the 2016's don't need codes I guess

The problem is to order a Navigation update you must provide the Radio and Navi codes. How do I retrieve them?

Deb not true all 2016 radio needs a code anti-theft go to Honda website put in search codes type in vin and serial number and the code will display