Longines introduced its elegant line of HydroConquest chronograph in certain European locations.
Have a midnight black dial, automatic chronograph GrandeVitesse has a non-slip embossing of the Crown, case band and pushers. The chronograph functions are activated by pressing the red push. With GrandeVitesse, Longines introduced its elegant line of HydroConquest chronograph in certain European locations. This range includes watches with aluminum eloxed with black dial bezel, screwed down case back and screw-in Crown. These features provide maximum resistance in the water up to 300 m.

Technical Perspective: Stopping The Whirlwind: Four Tourbillons With Stop Seconds, And Why That Matters
One of the single most important features of watches intended to keep very accurate time is the presence of a stop seconds function. The single most important purpose of the tourbillon – as Breguet originally conceived it, certainly – is to make a watch more accurate. You would think therefore, in a rational universe, that you would see the tourbillon and a stop seconds function paired frequently, if not invariably . . . but you'd be wrong.First of all, let's talk tourbillon. The basic idea behind the tourbillon is pretty simple: it's a solution to a really old problem in watchmaking, which is that a watch will run very slightly faster, or slower, depending on what position it's in. This is mostly due to how gravity pulls on the balance and balance spring in different positions. For example, think of the balance, which has at its center the balance staff (a very, very thin steel pivot). The tips of the balance staff sit inside the holes of two jewels, and wh

Hooray
The sun is out here in uk

My custom 2254.50 arrived for Christmas 2007 looking like this:
Then came the non-America's Cup dial with applied markers:Followed by the non-America's Cup WG bezel:Then a display back:And now a second hand from the Planet Ocean:Fr. John?

Flipping for an Aquanaut on strap
I'm seriously considering trading my YG SubC LN and black dial Explorer II plus cash for a 5167 and AP Jumbo. For those with the 5167 on rubber strap, is there ever a need to change straps when it get hotter / colder since there is no micro adjustment?