Nivada Grenchen Chronomaster Aviator Sea Diver 86007M-BRAC

The Nivada Grenchen Chronomaster Aviator Sea Diver 86007M-BRAC is a modern re-edition of the iconic and versatile “tool watch” of the 1960s. Its name reflects its intended multifunctionality, catering to pilots (“Aviator”) with its tachymeter scale, divers (“Sea Diver”) with its 100-meter water resistance and rotating bezel, and racing enthusiasts with its chronograph function (“Chronomaster”).Historically, the Chronomaster was known as a “jack-of-all-trades” watch, combining features that were typically found in separate, specialized timepieces. The modern iteration remains faithful to this ethos and the original design, capturing the vintage aesthetic that has made the original a collector’s favorite. It is often lauded for its “tool watch” character, prioritizing functionality and legibility.This particular reference, 86007M-BRAC, specifically denotes the manual-winding version with a stainless steel “beads-of-rice” bracelet. Variations of the modern Chronomaster exist, including models with automatic movements and different strap options. The dial features two sub-dials, a running seconds at 9 o’clock and a 30-minute chronograph counter at 3 o’clock, which includes a regatta timer. The bi-directional rotating bezel serves a dual purpose with a 60-minute scale for diving and a 12-hour scale for tracking a second time zone.The re-edition is powered by a reliable Swiss manual-winding chronograph movement, visible through an exhibition case back on some versions, though typically solid. The case is stainless steel, and the crystal is a double-domed sapphire, providing modern durability to the vintage design.