Seiko Prospex Speedtimer Stainless Steel Automatic 39.5 MM Watch SPB513J1 Omega the sharp and smooth lugs

the sharp and smooth lugs construction and of course the unique Bioceramic feel

this timepiece is driven by the OMEGA Co-Axial Master Chronometer Calibre 8900

Band Material: Crocodile leather

The light blue of the GMT hand is mirrored in the dial ring to make it easy to read the 24 hour hand at a glance and the GMT hand is illuminated by a Lumibrite that emits a different colour than that of the hour and minute hands and indexes

Seiko Prospex Speedtimer Stainless Steel Automatic 39.5 MM Watch SPB513J1 Omega the sharp and smooth lugsCaliber Number: 6R55 Movement Type: Automatic with manual winding Precision: +25 to 15 seconds per day Power reserve: Approx. 72 hours(3 days) Jewels: 24 Functions Stop second hand function Case Band Case Material Stainless steel (super hard coating) Case Size Thickness: 12. 0mm Diameter: 39. 5mm Lug to lug: 44. 5mm Crystal Curved sapphire crystal Crystal Coating Anti reflective coating on inner surface Clasp Three fold clasp with push button release