The Mido Ocean Star Powerwind “Rainbow Diver” is one of the most obscure but distinctive and coveted vintage dive watches out there.
Manufactured in the ’60s, the Rainbow is a full-on, certified dive watch rated to 300m, or 1,000ft. The exotic dial isn’t just for looks; it’s also for utility. The multi-colored concentric scales on the dial mark out diving decompression times at various depths (130, 110, 90 and 70 feet).
Ocean Star reference 5907 was part of the Ocean Star Series. The “deep dive timer”, as it was called in Mido marketing materials, was produced with different color dials, in feet and meters versions, date and no-date, and in enough combinations of tension ring color and lume plots that many of the remaining reference 5907s are seemingly unique in their configuration.
The Mido diver has a satisfying 38mm diameter, aligning its proportions favorably with modern watches. Using Swiss movements based on ebauches from A. Schild, the “Powerwind” designation on the dial refers to an efficient automatic winding system the brand developed in 1954 that required far fewer components than the typical automatic mechanism of the time.
This particular example is fitted with the highly sought after original and signed Mido Bonklip bracelet.
The bezel shows some wear, otherwise the watch is in very good condition and all original.