Seiko Cal. 6637 - 542

The Seiko 6637-542 represents an important milestone in Seiko's 1968 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-8c78141a829d]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1968

Related Models

• Seiko 0790-519
• Seiko 6368-933
• Seiko 5666-225
• Seiko 7174-313
• Seiko 6350-595
• Seiko 4462-340
• Seiko 6687-163
• Seiko 5629-669
• Seiko 7080-622
• Seiko 4564-809
• Seiko 4570-583
• Seiko 5676-199