Seiko Cal. 5285 - 709

The 5285-709 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5285 caliber with 35j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-e7515b413a3a]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1980

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