The Omega Seamaster Diver 300M Chronograph Ref. 213.30.42.40.01.001 is a robust professional diver's chronograph watch that combines the classic design of the Seamaster line with advanced timing functionality.

The Omega Seamaster Diver 300M Chronograph Ref. 213.30.42.40.01.001 features a 41.5 mm stainless steel case paired with the signature stainless steel Seamaster bracelet. Its black dial is decorated with Omega’s distinctive wave pattern and fitted with luminous hour markers and hands for excellent legibility underwater. Three chronograph sub-dials provide stopwatch functions, while a date aperture sits neatly at 3 o’clock.

Designed for serious diving, the watch includes a unidirectional rotating bezel for timing dives and a helium escape-valve positioned at 10 o’clock, a hallmark of professional Omega dive watches. With a screw-down crown and sapphire crystal, the watch is water-resistant to 300 metres (30 ATM). 

At its heart is the automatic Omega Calibre 1164 chronometer movement, based on the Valjoux 7750 architecture, offering a power reserve of approximately 44 hours and COSC-certified precision. 

This example, first sold new by us, dates to 2009 and is in excellent cosmetic and mechanical condition, having been subject to a complete service by Omega in September 2024, meaning that the watch remains under Omega service warranty until September 2026. The watch comes complete with inner and outer boxes, operating instruction and manual, wallet including pictogram card, chronometre certificate, and original international warranty card stamped and dated April 2009. The Omega service paperwork, constituting the two year service warranty, is also included.