Seiko Cal. 6636 - 889

Seiko 6636-889

This Hand-Winding model from 1975 features a 37mm PVD Black case. Powered by the 6636 caliber with 22j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-17b4473bdb49]

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
12.2mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
White
Jewels
22j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1975

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seikata-wm-17b4473bdb49