This is a replica of Kara's Kryptonian Braclet can be seen through out season 7 and a few times in season 8 this was also a key to open a something in a deleted scene of veritas it has the EL family logo on it (Superman Emblem) we know that Screencap Montage from Season 7 epiosdes: Kara,Traveler and Season 8 Episode: Bloodline
