Ojiro clocks the reaction out of the corner of their eye, and keeps their examination of it brief. Putting it on would be a little too rude, so they'll have to take Jack at his word for what it does. "Good branding," they comment as they set it down. It can't have much other use, in a hand-to-hand fight. "Was this standard gear for soldiers in your world?" It wouldn't surprise them, flashy as the visor was.