Seiko Cal. 6638 - 892

The Seiko 6638-892 represents an important milestone in Seiko's 1976 lineup. It features a Cream dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-2639c12871bd]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1976

Related Models

• Seiko 6361-655
• Seiko 0730-276
• Seiko 6217-977
• Seiko 3889-791
• Seiko 4483-249
• Seiko 3882-724
• Seiko 5687-572
• Seiko 3840-261
• Seiko 4438-217
• Seiko 6620-520
• Seiko 5655-463
• Seiko 5677-416