Marathon 41mm MaraGlo™ Black Navigator w Date (NAV-DM) Ballistic Nylon Watch The Mara G lo ™ Pilot's Navigator with Date (NAV-D M ) is designed to provide pinpoint accuracy for pilots, parachutists, and everyday adventurers . The hour indices and hands utilize MaraGlo ™ luminescent paint, delivering a bright glow that will shine for up to 8 hours.   Movement:   ETA FØ6 High Torque Quartz No of Jewels:   3 Scale Quantity:   2 Scale Range:   1-12 (13-24) Calendar Type:   Date Luminous Features:   MaraGlo™ Crystal Material:   Sapphire Crown Type:   Pressure Case Material:   High-Impact Composite Fibreshell Case Finish:   Matte Bezel Type:   Bi-Directional Bezel Scale:   12 Hour Submersibility:   6 ATM Case Diameter:   41mm Case Thickness:   13mm Lug Width:   20mm