Detailed product parameters:

Brand: OUMASHI

Style: 7750 watches

Watch movement: ETA 7750 Automatic movement

Movement function: 6 hands / calendar/Timing function

Case material: 316L stainless steel

Back cover material: 316L stainless steel

Back cover type: Transparent bottom cover

Case diameter: 40mm (excluding crown)

Case thickness: 16mm (including lens and caseback)

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

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

Strap material: Leather

Glass material: Sapphire glass

Crown type: screw-in crown

Surface size: 32mm (surface diameter)

Needle technology: the surface of the dial batch needle green luminous

Dial luminous:C3 super luminous powder, Green luminous

Water resistance level: 50 meters waterproof / diving [can wash hands, swimming, diving, to meet all daily waterproof requirements]