Seiko-Prospex Sea SPB381 Diamond Dial This timepiece is water-resistant up

This timepiece is water-resistant up to 20 bar

The hexagon pattern on the barrel and cap reflects the refraction of lights and night traffic in urban cities

Between lugs: 21 mm

The timepiece comes with a unidirectional bicolor ceramic bezel

Seiko-Prospex Sea SPB381 Diamond Dial This timepiece is water-resistant upCaliber Number 6R54 Movement Type Automatic with manual winding Precision +25 to 15 seconds per day Power reserve Approx. 72 hours(3 days) Jewels 24 Functions 24 hour hand Stop second hand function Case Band Case Material Stainless steel (super hard coating) Case Size Thickness: 12. 9mm Diameter: 42. 0mm Lug to lug: 48. 6mm Crystal Sapphire crystal Crystal Coating Anti reflective coating on inner surface LumiBrite LumiBrite on hands, index(es) and