This 34.5mm. ENICAR HEALTHWAYS is a very uncommon and very early dive watch. Healthways was one of the very first dive gear producers in the 1950’s. This watch was introduced in 1955, making one of the FIRST dive watches to hit the market. The fine automatic winding caliber 1010 movement in an in-house ENICAR creation-cleaned and accurate. These ESPA compressor style cases were introduced in 1955 and ENICAR was one of the first to adopt them. This dial is exotic looking and amazing-all original including the hands and lume. Even the crown is original and signed. Keep in mind, these are smaller sized watches-but a true TOOL watch nonetheless. Very cool looking on the wrist!