Seiko Cal. 5646 - 161

The Seiko 5646-161 represents an important milestone in Seiko's 1977 lineup. Powered by the 5646 caliber with 31j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-4c072aa1f223]

Also known as: Panda, Sportsmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1977

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