Luxury men's watch New Chronograph Equation Racing Men Automatic Mechanical Watch Waterproof 10ATM Sapphire 4801 4130 Movement

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Watch brand: OUMASHI Auto race timing automatic mechanical watch

Movement model: 4130 automatic mechanical watch

Movement function: chronograph, calendar, luminous, timing, speed measurement, 24 hours system, etc

Case material: 316L stainless steel

Case technology: brushed + polished

Back cover material: 316L stainless steel

Back cover type: screw in transparent sapphire glass back cover

Case diameter: 39.3mm (excluding crown)

Case length: 48mm (total length of top and bottom)

Case thickness: 14mm (including lens and caseback)

Case ear position: 20mm (where the case and strap are attached)

Watch length: 220mm (total watch length / circumference)

Strap material: stainless steel strap/rubber strap

Glass material: sapphire glass

Crown type: screw-in crown

Bezel material: Ceramic bezel

Bezel size: 39.3mm

Surface color: Four chronograph racing dials

Surface size:29mm

Water resistance level:  10ATM waterproof / diving [can wash hands, swimming, diving, to meet all daily waterproof requirements]

Exhaust valve: no

Packaging standards:  professional waterproof plastic box packaging Avoid damaging the watch during transportation (send watch storage box)