Founded in Saint-Imier in 1884, Breitling built its reputation on precision instruments for aviation and professional use before extending that same engineering philosophy to the deep sea. The Superocean, one of the brand's most enduring dive watch lines, traces its visual DNA back to the iconic Slow Motion chronograph of the 1960s. The Rainbow edition, introduced in 2021, brings a bold and playful twist to that heritage: a black dial with hour markers and hands coated in a full spectrum of Super-LumiNova colours that cycle through yellow, green, blue, indigo, violet, red and orange — visible in daylight as a subtle multicolour gradient and underwater as a genuinely remarkable display of luminescence.

Reference A17375211B2S4 is a 42 mm stainless steel automatic diver's watch, 12.56 mm in thickness, with a screw-locked crown fitted with two gaskets and a screwed-in caseback. The black dial carries broad polished hands and applied hour markers, all coated in the full rainbow Super-LumiNova graduation. At its heart beats the Breitling Calibre 17, COSC-certified. The cambered sapphire crystal is glareproofed on both sides. The unidirectional ratcheted bezel carries a black ceramic insert with a 60-minute diving scale. Water resistance is rated to 300 metres. The watch is presented on a yellow rubber strap with a stainless steel micro-adjustable folding clasp.

This Breitling Superocean Automatic 42 Rainbow is in near mint condition and comes as a full set with a new and uncut rubber strap.