I've seen some of the fancier electric BE seats (I forget which ones), that have a light (I forget what color), that seem to indicate to the FAs whether or not the seat is fully upright for takeoff and landing, but you say - First Class seats. I guess you didn't, or can''t taka pic??
Also, I'm not really sure why you'd need nerve to ask a FA that!
I LUV to talk to the FAs whenever possible - - including about
FlyerTalk! Anyway, once, I remember being on an A320. The seat pocket emergency cards say - A320-SR. I asked what "SR" means. They didn't know - - and neither did the pilots!!!
My ed-ji-kayted guess is A320-
Standard
Range, compared to ER (extended range) and LR (long range).
Any thoughts?