Seiko Cal. 6659 - 920

The 6659-920 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-cafd3befd8ba]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1977

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