|Series of Origin||Ben 10: Alien Force|
|Debut||Ben 10 Returns: Part 1|
The Recailbrated Omnitrix is like a wrist band watch after Ben Tennyson put the Original Omnitrix back on after for four years
- Original Series: In the first form that Ben encountered, the Omnitrix looked like a very big wristwatch, primarily black and grey in color, with a grey (or black) dial in the middle (like a watch face) which has a green hourglass shape (the intergalactic "peace" symbol, also on Plumber's Badges and Galvan Prime) on it. When Ben selects his aliens it shows the alien's silhouette. The prototype Omnitrix (before recalibration) in Omniverse looks the same as how it was in the Original Series. However, whenever Ben transforms into an alien form, the colors of the Omnitrix symbol that is located on the alien form have been changed from white and grey to green and black, due to the removal of the scratchguard.
- Omniverse: same as in the Original Series
- Alien Force: same from the Original Series but recalibrated into a shape