You may have been looking for this Infinimatrix.
Infinimatrix or the Omnitrix 2.0
The Infinmatrix is the device that Ben uses in Ben 10: Infinity
All episodes of Ben 10: Infinity.
It has all the functions of the Omnitrix and it has the to evolve some aliens into Infinite Forms.
All from OS-OV
Infinite Echo Echo
Infinite Way Big
It resembles the Omnitrix with the intergalatic peace symbol in the middle.In the future it looks like the Future Omnitrix from the OS but green with the Omntrix's faceplate.