Seiko Cal. 5650 - 880

The Seiko 5650-880 represents an important milestone in Seiko's 1986 lineup. Powered by the 5650 caliber with 28j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-90e24e77b1fb]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1986

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