Seiko Presage Cocktail Time 'Grasshopper' Open Heart Automatic Watch SSA441J1

Caliber Number: 4R38

Movement Type: Automatic with manual winding

Power reserve: Approx. 41 hours

Jewels: 24

Stop second hand function

Case Material: Stainless steel

Case Size

Thickness:11.8mm

Diameter:40.5mm

Lug-to-lug:47.5mm

Crystal: Box-shaped Hardlex

Clasp: Deployment clasp

Distance between lugs: 20mm

Water Resistance: 5 bar

Weight: 135.0g

See-through & Screw case back