Seiko Presage Sharp Edged Series Open Heart 3 Days Automatic Watch - SPB415J1

Caliber Number: 6R5J

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power reserve: Approx. 72 hours(3 days)

Jewels: 24

24-hour hand

Hacking seconds hand function

Case Material: Stainless steel (super hard coating)

Case Size

Thickness:13.5mm

Diameter:40.2mm

Lug-to-lug:47.4mm

Crystal: Dual-curved 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

Magnetic Resistance: 4,800 A/m

Weight: 158.0g

See-through & Screw case back