Omega Seamaster Diver 300M 210.30.42.20.03.001

This is the current generation Seamaster Diver 300M in its most recognisable form: 42mm stainless steel on a matching steel bracelet, with a blue ceramic wave dial and a blue ceramic bezel. The Diver 300M line dates to 1993, and this reference carries the design introduced in 2018. It is a Master Chronometer certified diver that works as an everyday watch.

The 42mm steel case has a unidirectional rotating bezel with a blue ceramic insert and a white enamel diving scale. The blue ceramic dial has a laser-engraved wave pattern, with a date window at 6 o'clock and luminous hands and indexes. The crystal is a domed scratch-resistant sapphire with anti-reflective treatment on both sides, and the watch is water resistant to 300 metres (1000 ft) with a helium escape valve. Inside is the Omega Calibre 8800, a self-winding Co-Axial movement certified by METAS as a Master Chronometer, with a 55 hour power reserve. It is visible through the sapphire caseback, and the bracelet closes with a folding clasp.

This example is from 2024 and is in excellent pre-owned condition. The bracelet fits up to just over 7.5 inches. It comes with the original box and papers.