Mido Ocean Star Decompression Timer 1961 Limited Edition

This dial is housed in a 40.5 mm x 13.4 mm case crafted from polished stainless steel and equipped with a unidirectional rotating bezel featuring a turquoise aluminium ring that allows the wearer to calculate diving time or decompression stops. Protected by two guards and decorated with the original Mido logo, the crown is screwed for improved water resistance, guaranteed up to a pressure of 20 bar (approximately 200 metres /660 feet).Under the anti-reflective box-shaped sapphire crystal reminiscent of the domed plexiglass of the past but less prone to scratches, the silvered white dial of the new Ocean Star Decompression Timer 1961 reproduces the bright colours of the original decompression scale already used in the 1960s. The depths are indicated at 12 o’clock in metres/feet and represented by 4 coloured circles: - yellow for dives between 25mt / 80ft and 29mt / 94ft; - green for dives between 30mt / 95ft and 34mt / 109ft; - pink for dives between 35mt / 110ft and 39mt / 129ft; - blue for dives between 40mt / 130ft and 44mt / 149ft. Depths beyond 149 feet have not been included because, at greater depths, the danger of "divers' narcosis" exists. On each of the four different coloured depth circles you see numerals, beginning with "0" and increasing as you read clockwise around the circle. The amount of time from 12 o'clock on the dial to the "0" on each coloured circle is referred to as "clean time" - or time not requiring decompression. The numerals following "0"