Seiko Cal. 6633 - 337

The 6633-337 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6633 caliber with 22j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-caffbe985775]

Also known as: Monster, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1978

Related Models

• Seiko 6363-169
• Seiko 6234-295
• Seiko 4554-394
• Seiko 4510-621
• Seiko 5691-437
• Seiko 6110-303
• Seiko 4529-382
• Seiko 6316-686
• Seiko 6218-280
• Seiko 6219-752
• Seiko 5275-349
• Seiko 4564-116