This is the watch with separate hour and minute dials, the same high-precision timekeeping used in 19th century observatory clocks. Relied upon for astronomical observations and by watchmakers as a time standard, the observatory clocks’ dual dials achieved an accuracy of +/-12 seconds per year—precision unequaled by any timepiece of the same era. The self-winding mechanical watch has a 20-jewel automatic regulator—a miniature version of those used in observatory clocks—that oscillates at 21,600 vibrations per hour for accuracy to within seconds per day. A window in the watch dial provides a view of the weighted balance wheel oscillating back-and-forth and the escapement as the jeweled lever releases the escape wheel, advancing them forward with each passing second. The splash-resistant watch has a stainless steel case with a hardened crystal case back that reveals the bronze finished automatic rotor that keeps the watch wound with a flick of the wrist. With a black leather band and a dial etched with an intricate guilloché engraving. Fits wrists 6 3/4" to 8 3/4" in circumference. Case: 1.65" Diam. x 0.47" D. (2 3/4 oz.)
The Observatory Clock Watch comes with The Hammacher Schlemmer Lifetime Guarantee. If this product ever disappoints you, for any reason, you may return your Hammacher Schlemmer purchase for exchange, credit, or refund.
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