9300

About the Omega 9300

It was designed as a chronograph from the start rather than adapted from a base, and its signature is the dial: two subdials instead of three, with the 12-hour and 60-minute counters combined at 3 o'clock so an elapsed time reads like a clock. The Si14 silicon balance spring, the free-sprung balance and bidirectional winding follow the 8500 family, and two barrels give 60 hours at 28,800 vph with 54 jewels. It is COSC-certified; the 9900 is the Master Chronometer version that succeeded it in 2016.

In the library it sits under 15 Speedmaster Co-Axial Chronograph 44.25 references, 13 Speedmaster '57s at 41.5 mm, 10 Planet Ocean chronographs at 45.5 mm, 7 De Ville chronographs at 42 mm and 6 Dark Side of the Moons. The 44.25 mm case accounts for 21 references.

The 3313 is the Piguet-based chronograph it replaced, and the 1861 the hand-wound Moonwatch movement the Speedmaster automatics sit beside.