Seiko Cal. 6637 - 884

The 6637-884 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-62388dd0cd58]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1967

Related Models

• Seiko 7070-874
• Seiko 5686-991
• Seiko 6187-374
• Seiko 4582-945
• Seiko 7116-900
• Seiko 6296-910
• Seiko 5630-991
• Seiko 3862-797
• Seiko 5637-457
• Seiko 6352-762
• Seiko 6370-159
• Seiko 0782-792