Seiko Cal. 3866 - 731

The 3866-731 is a sought-after Kinetic piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-614dcf39c4e1]

Also known as: Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1965

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