The well-known Swiss watches brand, Breitling, just lately includes a unique style of submariner, Sea Wolf constructed from black steel in special edition. It is the only sorts of wristwatch that is worked under the water for 1000. Black dial, white luminous sends and timers and also the red accumulator forms a strong comparison.
This method stands out as the patent of Breitling, making the handled equipments started surrounding the metal case to stop the direct touch from the buttons and the movement. That could be its own advantage above other submariners which can not be used beneath the water for 1000m. It can be precise to one tenth second and shows periodical times.