Seiko Cal. 6138 - 310

The 6138-310 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-40eed7ffb0a0]

Also known as: Sumo, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1988

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