Sorry, here is the System button menu better:
Lumineux
Paaire D’ Eciuteeus
Sous-Titres
Aarros Differe (this looks to be 30 minute timers)
Jeux
Accessibilite
Tous Les Parameters
Aider
Clock
Click on the third one down below sorry.
Hubby is French
According to Lens Tous Les Parameters is All the Settings (which makes sense), so down that option is probably screen language.