Seiko Presage Sharp Edged Series Midday 40.2 MM Automatic Watch SPB309J1

Caliber Number: 6R38

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power reserve: Approx. 70 hours

Jewels: 24

Hacking seconds hand function

Case Material: Stainless steel (super hard coating)

Case Size

Thickness:11.8mm

Diameter:40.2mm

Lug-to-lug:47.4mm

Crystal: Sapphire crystal

Crystal Coating: Anti-reflective coating on inner surface

LumiBrite: Lumibrite on hands and index(es)

Clasp: Three-fold clasp with push button release

Distance between lugs: 20mm

Water Resistance: 10 bar

Weight: 161.0g

See-through & Screw case back