Seiko Cal. 6635 - 633

This Spring Drive model from 1992 features a 39mm Two-Tone case. Powered by the 6635 caliber with 18j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-6bf29e1a7755]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1992

Related Models

• Seiko 5662-946
• Seiko 6664-712
• Seiko 7094-925
• Seiko 5612-278
• Seiko 6238-795
• Seiko 6313-957
• Seiko 5692-189
• Seiko 5272-129
• Seiko 7048-468
• Seiko 5227-458
• Seiko 4458-865
• Seiko 4483-692