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These two watches were designed with the singular purpose; to enable extreme divers to make them their first choice watch for diving. However, here is where the similarity ends. From this point on, Rolex incorporates the need for styling to cater for connoisseurs whereas Deep Blue went on the need to make its creation tool-like and affordable for the normal Joe.
Rolex made the effort to create a patented divers extension whereas Deep Blue is contented to use the typical one-size only extension mechanism in the clasp.
The helium escape valve mechanism utilized is also different. For Rolex, its engineers created a gas escape valve fitted with a spring: it opens when the difference in pressure between the inside and outside of the watch reaches 3 to 5 bars, allowing the helium to escape, thereby protecting the watch. For Deep Blue, a manual system is used. A special crown at the 10 o’clock position needs to be manipulated manually if the user feels the pressure require equalization. Although this potentially puts the Depthmaster at risk if users forget to engage the valve when required, the assumption is that only professional divers will ever be in that position anyway and training will make them do the necessary to ensure all their equipment are protected.
The patented Rolex Glidelock fine adjustment system allows divers to adjust the length of the bracelet to fit over a diving suit, without using any tools. A toothed panel under the clasp cover provides an extension of up to 20 mm in 2 mm increments.
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