Seiko Cal. 6333 - 621

The Seiko 6333-621 represents an important milestone in Seiko's 1978 lineup. Powered by the 6333 caliber with 34j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-5240368cdc80]

Also known as: Tuna, UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1978

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