This is a Lemania chronograph dating to the early 1970’s. It’s a large and chunky case with internal rotating bezel operated by the crown at the 10 position. Lemania Automatic Space Chronograph. Case back: Screw on.
Orient Bambino Classic RA-AC0024L30B Navy — WatchNation. Bambino Classic. Thenavy blue sunburst dial is the feature that makes this Bambino the most visually striking in the Classic range. The sunburst finishing technique applies a radial polish that causes the deep blue surface to shift dynamically in changing light — deepening to near-black in shadow and brightening to a rich, saturated navy in direct illumination.