First and foremost, to be able to send CB-1 away toward Melroe, Eisen created a few more items. First, he created another receiver for CR-1 so that he could give it to the camera bat, so that conversation with others would be possible. Since the sound also transmitted through the cameras, albeit only that in the immediate vicinity, Eisen could talk to whoever was looking at the receiver that CB-1 would be holding.
Other than the second receiver, Eisen also made a small pouch that would be able to hold that receiver as well as the gem, if necessary. Eisen is going to try and ask Ailren to bring Kirisho's gem to them personally, but he would fully understand if he wasn't going to do that. He would also appreciate if Ailren felt reluctant to hand it over to Eisen just like that as well, although he was hoping that it worked out.