Seiko Cal. 5638 - 977

Seiko 5638-977

The 5638-977 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5638 caliber with 17j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-844baec02f1d]

Also known as: Turtle, World Timer

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
35mm
Case Thickness
8.1mm
Lug Width
19mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
White
Jewels
17j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1979

Related Models

seikata-wm-844baec02f1d