Seiko Presage 60's Style Black Dial Black Bezel 40.8 MM Automatic Watch SSA449J1 Swatch This is the GMW-B5000 Series

This is the GMW-B5000 Series

Weight:           151 g

earth-focused design

The screw-in force of the screw lock bezel on an internal gasket further increases mud resistance

Seiko Presage 60's Style Black Dial Black Bezel 40.8 MM Automatic Watch SSA449J1 Swatch This is the GMW-B5000 SeriesCaliber Number: 4R57 Movement Type: Automatic with manual winding Precision: +45 to 42 seconds per day Power reserve: Approx. 41 hours Jewels: 29 Date hand Power reserve indicator Hacking seconds hand function Case Material: Stainless steel Case Size Thickness: 14. 3mm Diameter: 40. 8mm Lug to lug: 48. 9mm Crystal: Box shaped Hardlex LumiBrite: LumiBrite on hands and index(es) Clasp: Three fold clasp with push button release Distance between lugs: 20