[product_description]A 40mm stainless steel chronograph inspired by vintage 1960s dive watches, this model combines heritage styling with modern mechanical precision. Powered by an automatic Swiss movement, it offers a 48-hour power reserve and chronograph functionality with multiple sub-dials. The watch features a uni-directional bezel, sapphire crystal, and a choice of bracelet or leather strap. Its balanced proportions and monochromatic dial design create a timeless aesthetic, making it suitable for both casual and formal wear with strong mechanical reliability.[/product_description]
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MOVEMENT: Automatic winding

DIAL COLOR: Black

STRAP MATERIAL: Multi-piece stainless steel metal bracelet

STRAP CLASP MATERIAL: Folding clasp

CASE MATERIAL: Multi-piece stainless steel case, minutes scale top ring

CASE SIZE: 40.00 mm

GLASS MATERIAL: Sapphire, domed on both sides, anti-reflective coating inside

CRYSTAL TYPE: Sapphire

WATERPROOF: 10 bar

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OPERATING DEVICES: Stainless steel screw-in security crown and pushers

NTERHORN WIDTH: 20 mm

NUMBER: Oris 771, base SW 510

DIMENSIONS: 30.00 mm, 13 1/4’’’

FUNCTIONS: Centre hands for hours, minutes and chronograph 1/4 seconds, 2 subsidiary dials for continuous seconds and 30 minutes counter, fine timing device and stop-second

WINDING: Automatic winding, with red rotor

POWER-RESERVE: 48 hrs

VIBRATIONS: 28’800 A/h, 4 Hz

JEWELS: 27

LUMINOUS MATERIAL: Indices and hands Superluminova BG W9

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