Nivada Grenchen Chronomaster Aviator Sea Diver 86007M-BROL

This entry in the modern Chronomaster series, reference 86007M-BROL, is another variant of the manual-winding model. The “M” signifies the hand-wound Sellita SW510 M BH b movement. The “BROL” suffix indicates the watch is supplied with a Brown Oiled Leather strap, giving it a classic, rustic aesthetic that complements its vintage-inspired design.The watch shares its core functionality and historical context with its siblings in the Chronomaster re-edition family. It is a tribute to the highly versatile “all-in-one” tool watch of the 1960s, combining a pilot’s tachymeter, a diver’s rotating bezel with a 60-minute/12-hour scale, and a racing chronograph. The 30-minute counter includes the distinctive regatta timer, and the dial features broad arrow hands for legibility.The significance of this specific reference is its pairing of the robust, sporty Chronomaster case with a supple brown leather strap, offering a less formal and more traditional alternative to the steel bracelets or rubber straps. The case is 316L stainless steel, and the watch is fitted with a double-domed sapphire crystal. All other specifications, including the 38.3mm case width and 46.5mm lug-to-lug measurement, are consistent with the other manual-winding models in the collection.