The Seiko S23633J1 PROSPEX 4R36 Caliber watch is a quartz movement type with ±15 seconds per month accuracy and 300m / 1000ft water resistance for saturation diving.

Movement

Caliber Number
7C46

Movement Type
Quartz

Accuracy
±15 seconds per month

Battery life

Approx. 5 years

Exterior

Case Material
Stainless steel (super hard coating)

Crystal
Sapphire crystal

Crystal Coating
Anti-reflective coating on inner surface

LumiBrite
Lumibrite on hands and indexes

Clasp
Three-fold clasp with secure lock & push button release, solid & slide adjuster

Other Details

Water Resistance
300m / 1000ft for saturation diving

Case Size

• Thickness: 14.1㎜
• Diameter: 47.7㎜
• Length: 46.7㎜

Weight
200.0 g

Other Specifications

• Screw case back
• Unidirectional rotating bezel

Other Features

• Day/Date display