Seiko Cal. 5285 - 387

Seiko 5285-387

The 5285-387 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5285 caliber with 19j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-cf0f694814c1]

Also known as: Tuna, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
44mm
Case Thickness
11.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Green
Jewels
19j
Frequency
36,000 bph
Power Reserve
37 hours
Year
1965

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