Seiko Cal. 5661 - 237

The Seiko 5661-237 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-1ce9f7ff10a0]

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1970

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