Panerai Luminor GMT

IWC Portuguese Grande Complication
Twenty years ago IWC debuted its Grande Complication, and at SIHH 2010, the 657-component movement made its first ever appearance in a Portuguese case. Dubbed the flagship of the Portuguese fleet, the automatic-winding 79091 caliber offers a chronograph that records up to 12 hours, perpetual calendar displaying the day, date, month and the complete year in four digits, moon phase accurate to 1 day in 122 years, minute repeater, and small hacking seconds. IWC’s original Grande Complication required 7 years of development to make so many complications fit in a wearable wristwatch. Though the movement is highly complex, the dial displays are crystal clear, and the 4 digit year display at 8 o’clock has become a signature visual reference point. The 45mm case is well proportioned, and remarkably for a minute repeater, it offers 3 bar water resistance. In keeping with the spirit of the Portuguese seafarers, the caseback is engraved with a sextant, and the silver dial features an

The gum has over a thousand of designer and luxury boutiques
Today, the gum has over a thousand of designer and luxury boutiques. To celebrate the opening of its store in Moscow, Omega offers a Watch exclusive limited edition named as x of the city of red 2 instead. Created in 18kt gold red, 2 X was inspired by the cosmic 1951.

For all you beginners that don't know
I asked this a long time ago and never understood it to be truthful. But I found an excerpt from a new book I'm reading about watches.Here is how you read your tachometer."The tachometer may have a spiral scale around center of dial, this indicates miles per hour, based on a trial over one mile. It indicates speed from 400 to 20 miles per hour on three turns. Each turn of spiral corresponds to one minutes (scale for first 8 seconds being omitted), the outer turn from 400 to 60(0 to 1 minute) and the center turn from 30 to 20 miles per hour (2 to 3 minutes).When passing the first marker of mile zone, start chronograph hand by pressing the push piece. When passing following mile marker, press push piece again. The chronograph hand now indicates the speed in miles per hour on the spiral. If a mile has been made in less than one minute the speed will be indicated on the outside turn of spiral; from 1 to 2 minutes on middle turn and 2 to 3 minutes on center turn.Example: If a mile has been

Accuracy of self winding watch
Just wondering is it acceptable to use a quartz watch's time as the benchmark for seeing if your self winding watch is gaining or losing seconds?I know that using an atomic clock off the net is the usual way.

Bergeon 7825
Can someone confirm that the Bergeon 7825 works on a deepsea?