Seiko Cal. 6633 - 789

This Spring Drive model from 1984 features a 35mm PVD Black case. Powered by the 6633 caliber with 31j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-b9f6e62b427f]

Also known as: Turtle, Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1984

Related Models

• Seiko 6382-234
• Seiko 4459-937
• Seiko 0768-795
• Seiko 3845-759
• Seiko 6331-346
• Seiko 7182-701
• Seiko 6268-942
• Seiko 5274-880
• Seiko 6116-765
• Seiko 4574-637
• Seiko 6319-978
• Seiko 4585-692