Seiko Cal. 6138 - 766

Released in 1973, the Cal. 6138 with design code 766 was part of Seiko's domestic market collection. With its 22mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-792ec8dae761]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1973

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