Seiko Cal. 4531 - 399

Seiko 4531-399

The 4531-399 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4531 caliber with 27j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-e10990e930e3]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
34mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Green
Jewels
27j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1989

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seikata-wm-e10990e930e3