Seiko Prospex Sea 1965 Heritage Diver's 40 MM Automatic Watch SPB451J1 FREDERIQUE CONSTANT an alloy with a pitting

an alloy with a pitting resistance 1

monocrystalline silicon balance-spring

it is designed to withstand the most punishing conditions and the worst weather situations

Water Resistance :200m / 660ft diver's

this automatic chronograph is more than a timepiece - it’s a symbol of resilience

Seiko Prospex Sea 1965 Heritage Diver's 40 MM Automatic Watch SPB451J1 FREDERIQUE CONSTANT an alloy with a pittingCaliber Number: 6R55 Movement Type: Automatic with manual winding Precision: +25 to 15 seconds per day Power reserve: Approx. 72 hours(3 days) Jewels: 24 Stop second hand function Case Material: Stainless steel Case Size Thickness: 13. 0mm Diameter: 40. 0mm Lug to lug: 46. 4mm Crystal: Curved sapphire crystal Crystal Coating: Anti reflective coating on inner surface LumiBrite: LumiBrite on hands, index(es) and bezel Clasp: Three fold clasp with secure