Seiko Prospex Sea Sumo Grey Dial 45 MM Automatic Diving Watch SPB323J1

Movement

Calibre Number: 6R35

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power reserve: Approx. 70 hours

Jewels: 24

Functions

Stop seconds hand function

Date display

Case Material: Stainless steel (super hard coating)

Case Size

Thickness:13.4mm 

Diameter:45.0mm 

Lug-to-lug:52.6mm

Crystal: Sapphire crystal

Crystal Coating: Anti-reflective coating on inner surface

LumiBrite: LumiBrite on hands, index(es) and bezel

Clasp: Three-fold clasp with secure lock , push button release with extender

Distance between lugs: 20

Water Resistance: 200m / 660ft diver's

Features

Screw case back

Unidirectional rotating bezel

Screw-down crown

Three-fold clasp with secure lock

Screw case back