Seiko Cal. 5631 - 853

Seiko 5631-853

The 5631-853 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5631 caliber with 36j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-0ed44e3eefb7]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
35mm
Case Thickness
15.1mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
70m
Dial Color
Silver
Jewels
36j
Frequency
28,800 bph
Power Reserve
68 hours
Year
1972

Related Models

seikata-wm-0ed44e3eefb7