[product_description]This 40mm stainless steel chronograph features a black dial and leather strap, offering a classic and refined vintage-inspired aesthetic. Powered by a Swiss automatic movement with a 48-hour power reserve, it delivers precise chronograph performance with multiple sub-dials for seconds and 30-minute timing. The domed sapphire crystal enhances durability and clarity, while screw-in pushers improve reliability. With 10 BAR water resistance and finely tuned mechanical engineering, it blends traditional style with modern functionality for everyday versatility.[/product_description]
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MOVEMENT: Automatic winding

CALIBER:

DIAL COLOR: Black

STRAP MATERIAL: Black leather strap

STRAP CLASP MATERIAL: stainless steel buckle

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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