Entrepreneur Matt Bullock spotted wearing a Rolex

Matt Bullock, the entrepreneur behind workplace gamification platform Spinify, was recently spotted wearing a Rolex Oyster Perpetual GMT-Master II reference 116713LN — a two-tone variant that occupies a unique niche between the brand's full-steel sport watches and its precious-metal luxury pieces.

The 116713LN is built on a 40mm Oyster case in Rolex's corrosion-resistant 904L stainless steel, with 18k yellow gold applied to the crown guards, bezel frame, and bracelet centre links in the classic Rolesor configuration. The defining visual element is the matte black ceramic — or Cerachrom — bidirectional bezel insert, graduated for easy 24-hour timezone reading. Water resistance is rated to 100 metres, and the black dial houses luminous Mercedes hands alongside a date window at 3 o'clock. The bracelet is the Oyster with an Easylink comfort extension system, allowing approximately 5mm of adjustment without tools.

Power comes from the Calibre 3186, a 28,800 vph automatic movement featuring Rolex's Parachrom hairspring — resistant to magnetic fields and ten times more shock-resistant than conventional alloys — along with a Paraflex shock absorber. The movement provides a 48-hour power reserve and drives an independently settable 24-hour GMT hand, the feature that made this reference a genuine traveller's tool. The 116713LN was introduced in 2007 and remained in production until 2019, when it was replaced by the upgraded 126713GRNR.

Among collectors, the 116713LN carries a strong reputation precisely because of its Rolesor execution. Two-tone Rolex sport watches have historically faced mixed sentiment — considered too flashy by purists, too conservative by luxury-metal enthusiasts — yet the GMT-Master II in this configuration has aged gracefully, appreciated for its wearability across professional and social contexts. The black Cerachrom insert also ages far better than the earlier aluminium bezels of predecessor references.

At retail the 116713LN listed at approximately $12,700 USD before its discontinuation. On the secondary market, examples in good condition have traded between $14,000 and $17,000 USD depending on condition, box-and-papers status, and service history. For Bullock, a founder who operates across multiple time zones managing a global SaaS business, the GMT complication is less a style statement than a practical instrument — which is exactly what Rolex originally intended.