Seiko Cal. 5644 - 578

Seiko 5644-578

This Solar model from 1980 features a 38mm Hardlex-Coated Steel case. Powered by the 5644 caliber with 22j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-656d5122f80e]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
38mm
Case Thickness
10.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Black
Jewels
22j
Frequency
36,000 bph
Power Reserve
50 hours
Year
1980

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seikata-wm-656d5122f80e