The Bambino Open Heart also marks a lot of firsts for the AC00 collection. Aside from the open heart dial, it is the only model to not feature a date display (as a consequence of the open heart, of course). However, it's clearly taken design cues from its predecessors. The thin, modern hour markers and hands are borrowed from the AC08 Version 4, while the signed onion-styled crown is similar to the one found on the Version 2. It wouldn't be considered an Orient classic contemporary watch without its signature domed dial and crystal. Dimensions-wise it lines up with the Classic Contemporary Small Seconds: 40.5mm wide and just 12mm thick. It is powered by the polished caliber F6T22, a movement developed specifically for our open heart watches.