Seiko Cal. 6628 - 928

The Seiko 6628-928 represents an important milestone in Seiko's 1978 lineup. Powered by the 6628 caliber with 21j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-ba9562c01f32]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1978

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