Nivada Grenchen Chronomaster Aviator Sea Diver 86001A-OYST

The Nivada Grenchen Chronomaster Aviator Sea Diver 86001A-OYST combines the convenience of a self-winding movement with the classic look of an Oyster-style bracelet. The “A” in the reference number identifies it as an automatic model, powered by the Sellita SW510 BH b caliber, while “OYST” denotes the robust, three-link stainless steel bracelet.This watch continues the modern revival of the legendary 1960s Chronomaster, a timepiece celebrated for its multifunctionality. It seamlessly integrates features for aviators, divers, and racing enthusiasts, including a tachymeter scale, a bi-directional bezel with 60-minute and 12-hour markings, and a two-register chronograph. The 30-minute counter at 3 o’clock also features a regatta timer.As an automatic variant, it appeals to wearers who prefer a watch that winds itself through the motion of their wrist. The trade-off is a slightly thicker case profile compared to the manual-wind models to accommodate the movement’s rotor. The case is made of 316L stainless steel, topped with a double-domed sapphire crystal, ensuring it meets contemporary standards of durability while retaining its vintage soul. This reference provides a sporty, practical, and timeless option within the Chronomaster collection.