Seiko Cal. 6661 - 137

The 6661-137 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-dd58d8175fde]

Also known as: UFO, World Timer

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1969

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