Seiko Cal. 6181 - 515

This Hand-Winding model from 1970 features a 44mm Titanium case. With its 22mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-ed3ae33d1a0b]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1970

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