It can transform the wielder into any alien from the Omnitrix.
The Biomnitrix is two Omnitrices that are linked together, thus allowing the user to perform alien fusions by slamming the two gauntlets together. These fusions are not stored in the Biomnitrix, rather, they are created when being transformed into.[DJW 2]
By using just one gauntlet, the user can transform into normal aliens.[DJW 3]
It can be voice-controlled or even used without actually having to say the name of the alien, similar to the Omnitrix's Master Control.
Compared to past models, the Biomnitrix is incredibly streamlined and lightweight, possessing practically no bulk and appearing to perfectly blend in with, and mimic, the natural curves and contours of the user's forearms.
The Biomntrix can be temporarily disabled if it is exposed to a large electromagnetic pulse, such as from a solar flare.
Azmuth thinks the Biomnitrix is silly, but ultimately he's just relieved that Ben is having fun again.[DJW 22]
All Way Big fusions are smaller than Way Big, unless he is fused with something of the same size or bigger.[DJW 23]
When the Biomnitrix times out, the sounds of the original and latest Omnitrices' respective time-out clips play simultaneously. However, since its Master Control is active, the Biomnitrix would only time-out if Ben suffers severe damage. It also timed-out after the erased-from-existence Atomic-X was restored via the use of Clockwork's powers.
Out of all the concept ideas, XLRG, XLRWolf, XLRFreak, Diamondmutt, and Frankenhead were the only ones that were drawn (though the last four were only drawn in the original series art style and viewable in the DNA Lab). The others were 'names on the board'.[DJW 12]
If Ben 10,000 were to use Echostorm, he would shoot psychic sound waves.[DJW 9]