Seiko Cal. 7131 - 971

The Seiko 7131-971 represents an important milestone in Seiko's 1968 lineup. With its 22mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-d1ca5e7a90f7]

Also known as: UFO, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1968

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