Autobot (G2)
Autobot was an Autobot (surprise) from the Generation 2 era of Generation 1 continuity.
Autobot transforms from a robot to a time machine that resembles a human digital watch. It is unknown if he can travel through time while a robot or whether that ability is limited to the "watch" mode.
(This toy is specificly given the name "Autobot" on his package in the same place and style as the other watch toys in the group, such as Scorpia. With no other bio in existance it remains this toy's only official name.)
Toy
Autobot originated in the same Japanese Kronoform line as the majority of other Transformers watches. There he was called simply "Robot Time Machine." He has the distiction of being THE prototypical transforming watch toy of the 1980's with scores of knock-offs produced during that era.

