Seiko Cal. 6616 - 157

The Seiko 6616-157 represents an important milestone in Seiko's 1965 lineup. Powered by the 6616 caliber with 26j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-fdbdc7a02a33]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1965

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