Sat nav help.

[dearboy]

Just bought a route66 mini regional sat nav. I was under the impression that there was an audible warning when approaching speed cameras but so far nothing except a small visual logo on the screen advising of the speed limit. Does anyone know if this model has an audible warning. Does it possibly only work when doing an A to B route or if it works in just general map mode.
Ive read the manual and checked the website but its not very user friendly or thorough.
Any help is appreciated.