Seiko-Essential SRPH87 Ultra Deep the timepiece is driven by

the timepiece is driven by the OMEGA Co-Axial Master Chronometer Calibre 8802

CrownScrew-down 18K 2N yellow gold plated

Power reserve : 80-hour power reserve

Partners on the circuits

Crystal:Double Curved Mineral Box Crystal

Seiko-Essential SRPH87 Ultra Deep the timepiece is driven byDETAILS Movement Caliber Number 4R35 Movement Type Automatic with manual winding Power reserve Approx. 41 hours Jewels 23 Functions Stop seconds hand function Date display Case Band Case Size Thickness: 11. 8mm Diameter: 41. 2mm Lug to lug: 48. 5mm Crystal Hardlex Clasp Three fold clasp with push button release Distance between lugs 20 Other Details Water Resistance 10 bar Weight 130. 0 Features See through & Screw case back