Seiko Watches Prospex Alpinist Mechanical GMT Stainless Steel Case With Super-Hard Coating Black Dial Automatic GMT With Manual Winding Capability 39.5mm SPB379

Prospex Alpinist Mechanical GMT
Inspired by Seiko’s first sports watch, the 1959 Alpinist
Automatic GMT with manual winding capability
24-hour GMT bezel
Black dial with iconic wedge-shaped markers and stylized numerals and hands
Rotating inner compass bezel
Red-tipped GMT hand
Date calendar
LumiBrite hands and markers
Screwdown crown and see-through caseback
Tri-fold push button release clasp
CASE: Stainless steel case with super-hard coating
CRYSTAL MATERIAL: Curved sapphire crystal with anti-reflective coating on the inner surface
WATER RESISTANCE: 20 bar, 200 meters (660 feet)
DIAL COLOR: Black
STRAP: Black calf leather strap
THICKNESS: 13.6mm
DIAMETER: 39.5mm
LENGTH: 46.4mm
Caliber 6R54
21,600 vibrations per hour
24 jewels
Power reserve: approximately 72 hours