The Seiko SPB191J1 Prospex has a power reserve of 70 hours, sapphire crystal with anti-reflective coating on inner surface and has a titanium(super-hard coating) case with titanium bezel.

Specifications

Movement

Caliber Number
6R35

Movement Type
Automatic with manual winding

Precision
+25 to -15 seconds per day

Power reserve
Approx. 70 hours

Jewels
24

Functions

• Stop second hand function
• Date display

Case/Band

Case Material
Titanium(super-hard coating) with titanium bezel

Case Size

• Thickness: 13.3mm
• Diameter: 43.5mm
• Lug-to-lug: 51.0mm

Crystal
Sapphire crystal with magnifier

Crystal Coating
Anti-reflective coating on inner surface

LumiBrite
LumiBrite on hands, index(es) and bezel

Band Material
Silicone

Bracelet Length
210.0mm

Distance between lugs
22mm

Other Details

Water Resistance
200m / 660ft diver's

Weight
99.0g

Features

• Unidirectional rotating bezel
• Screw-down crown
• Allergy-safe metal
• Three-fold clasp with secure lock
• Screw case back