SEIKO PROSPEX ALPINISTModern re-imagining of Seiko's first sport watch, introduced in 1959Manual and automatic winding capabilities MOVEMENT Caliber no. 6R35 Movement Type Automatic with manual winding Precision +25 to -15 seconds per day Power reserve Approx. 70 hours Jewels 24 Functions Stop seconds hand function Date display CASE/BAND Case Material Stainless steel Case Size Thickness:13.2mmDiameter:39.5mmLug-to-lug:46.4mm Crystal Sapphire crystal with magnifier Crystal Coating Anti-reflective coating on inner surface LumiBrite Lumibrite on hands and index(es) Band Material Calfskin Clasp Three-fold clasp with push button release Distance between lugs 20 FUNCTIONS Water resistance: 20 bar Weight 87.0g Features: Rotating compass inner ring Screw-down crown See-through & Screw case back
