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The Seiko Astron Solar link in Titanium: case, titanium, 100 meters water resistant; 42.7mm link x 12.2mm. Perpetual day and date calendar. Movement, Seiko link in-house caliber 5X33, GPS solar, with signal reception indication, power save function, transfer of local to home time. Sapphire crystal with anti-reflective coating. Push-button clasp. Price, $2,500

Caliber: Calibre RM50-03Functions: link Hours, minutes, split-seconds link chronograph, power reserve, torque indication, link function indication, tourbillon. Diameter: 31.1 x 31.15mmThickness: 9.92mmPower Reserve: 70 HoursWinding: ManualFrequency: 21,600 vphJewels: 43Additional Details: Free-sprung balance, fast rotating barrel for more accurate performance.

I had link such an incredible view of the Milky Way and shooting stars. I was afraid I wouldn't be able to see the link gauges since I turned the lights off, but I realized that everything was illuminated by starlight. It was so bright. Now, that one picture that link I saw for maybe five to 10 seconds will stay in my mind forever. I will never see the stars like that again, above the atmosphere.

Sapphire has many functional benefits over acrylic crystal link it's harder scratch-resistant and durable. On the Mohs hardness scale it's a 9 just link below diamond 10. Sapphire has some drawbacks. It's more reflective and doesn't have the clarity of acrylic its hardness also makes it more difficult to work with. If it does get a scratch link it can't be easily polished out as with acrylic. But most companies and consumers today seem to think its benefits outweigh any shortcomings.