Seiko Cal. 7161 - 631

Released in 1989, the Cal. 7161 with design code 631 was part of Seiko's domestic market collection. Powered by the 7161 caliber with 23j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-54ae586cc81e]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1989

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