Seiko Prospex SPB321 Sumo Ceramic Bezel Blue Dial

Caliber Number
6R35
Movement Type
Automatic with manual winding
Accuracy
+25 to -15 seconds per day
Duration
Approx. 70 hours
Jewels
24
Functions
Stop seconds hand function
Date display

Case/Band

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
Lug width
20

Other Details

Water Resistance
200m / 660ft diver's
Weight
190.0
Features
Screw case back
Unidirectional rotating bezel
Screw-down crown
Three-fold clasp with secure lock
Screw case back