Seiko Prospex Speedtimer ‘Maximum Precision’ 8R Mechanical Chronograph Case Shape:Round [Movement]Caliber Number[:] 4R34[br]Movement Type[:] Automatic

[Movement]Caliber Number[:] 4R34[br]Movement Type[:] Automatic with manual winding[br]Power reserve[:] Approx

Movement RW4200 mechanical with automatic winding

Case MaterialRecycled Steel

Movement Function Automatic Hi-Beat with 3 hands and date

Seiko Prospex Speedtimer ‘Maximum Precision’ 8R Mechanical Chronograph Case Shape:Round [Movement]Caliber Number[:] 4R34[br]Movement Type[:] Automatic[Movement]Caliber Number[:] 8R48[br]Movement Type[:] Automatic with manual winding[br]Precision[:] +25 to 15 seconds per day[br]Power reserve[:] Approx. 45 hours[br]Jewels[:] 34[br]Functions[:] Chronograph with 30 minutes & 12 hours Stop second hand function Date display[Movement][CaseBand]Case Material[:] Stainless steel (super hard coating)[br]Case Size[:] Thickness: 14. 6mm Diameter: 42. 0mm Lug to lug: 49. 5mm[br]Crystal[:] Dual curved sapphire