The bracelet really doesn't mean much to Finnick, just a token from Haymitch meant to grab Katniss's attention in the arena. It'd seemingly worked so, by that, Finnick supposes it does have some kind of value.

Compared to a firearm, it's nothing. But Finnick isn't about to trade in his trident, and he does have every intention of bringing it back.

His smile brightens when she accepts it, mostly in relief. Says, "I'll take good care of it, I promise."

He doesn't mention that he should probably practice a little first. That, she doesn't need to know.