Suunto Stinger question

[Cherry]

I just got a Stinger as a gift and despite looking through the manual and online sources I cant see how to turn on the back light function. It does have one according to suunto but how the Hell do you turn on the bleedin' lite

Thanks

 

[docmartin]

your stinger has 4 buttons. press the upper right one for 2-3 seconds and voila the light goes on.