René Barton Antonius 135, Automatic 35J Moon phase 3ATM

It features a unique tonneau-shaped case, which is a barrel-like, curved rectangular form, giving it an elegant and classic appearance. The watch has a white dial with prominent, stylized Arabic numerals marking the hours. A notable design element is the "open heart" or semi-skeletonized window at the 6 o'clock position, revealing the intricate balance wheel of the automatic mechanical movement, which is the "heartbeat" of the watch. A small sub-dial, likely for the seconds hand, is also visible near the 6 o'clock position, overlapping slightly with the open heart window. The watch hands appear to be a classic style, contrasting with the white dial for readability.
Strap: It is fitted with a black leather strap with a textured, possibly crocodile-grain, finish. A classic fluted crown is visible on the right side of the case, used for setting the time and possibly manual winding.