Seiko Prospex SPB503 Alpinist Mechanical Land Automatic 3 Days Ice Blue Dial

Movement: Automatic

Calibre: 6R55

Precision: +25 to -15 seconds per day

Power Reserve: Approx. 72 hours (3 days)

Jewels: 24

Case Material: Stainless steel (super hard coating)

Case Thickness: 12.7mm

Case Diameter: 39.5mm

Lug-to-Lug: 46.4mm

Distance Between Lugs: 20mm

Water Resistance: 20 bar

Magnetic Resistance: 4,800 A/m

Weight: 147g

Crystal: Sapphire crystal with magnifier

Crystal Coating: Anti-reflective coating on inner surface

LumiBrite: Hands and indexes

Clasp: Three-fold clasp with push button release

Bezel: Rotating compass bezel

Crown: Screw-down crown

Case Back: See-through and screw case back

Functions:

• Stop Second Hand function