Chastity guide - couple

I am French, sorry in advance if there are any translation errors. My wife talks to me more and more about putting myself in a chastity cage. She tells me that you deserve an erection from time to time and if I'm good I could go out and enjoy my current erection. I may be going to buy a chastity cage, can you tell me a little bit about what awaits me in order to warm myself up to buying it so that I know what to expect following my future or potential cage placement.