Seiko Cal. 5642 - 491

Seiko 5642-491

The Seiko 5642-491 represents an important milestone in Seiko's 1977 lineup. Powered by the 5642 caliber with 36j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-56e6e39a6c3a]

Also known as: Turtle, UFO

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
14.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Green
Jewels
36j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1977

Related Models

seikata-wm-56e6e39a6c3a