A perception filter... like a cloaking device. [He nods, somewhat glad that he isn't affiliated with Jack's people. The risks that they must take every time they travel though time makes him and his overly cautious tendencies nervous, and he's just listening! (It's interesting, though, and much better than talking about what happened at home or where Chekov's head is.)]
Aha, well. Controlling lights and playing music are very important functions. [He smiles a little, still trying to determine how the wrist strap works just by looking at it.] It's important, too, to have some of your home here with you. In places like this, something sentimental is more valuable than something useful.