Omega Men's 3570.50.00 Speedmaster Professional Mechanical Chronograph Watch
* Omega 1861 Caliber Swiss mechanical-hand-wind chronograph used on the Moon; 48-Hour Power Reserve* Functions without a battery; must hand wind crown to power watch
* Hesalite crystal; Luminescent hands and hour markers
* Stainless-steel case; Black dial; Chronograph functions; Tachymeter function
* Water-resistant to 50 M (167 feet)
Omega Speedmaster Professional Watch Review:
Positive:
* Classic, timeless, durable, iconic watch.
* The most historically important watch ever manufactured. The Omega Speedmaster 3570.50 is still flight-qualified by NASA.
Negtive:
* Accuracy
* High servicing costs
* No date
* Esalite crystal is not scratch resistante
