Seiko Cal. 6637 - 368

The Seiko 6637-368 represents an important milestone in Seiko's 1978 lineup. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-753eac04d360]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1978

Related Models

• Seiko 4458-161
• Seiko 3855-413
• Seiko 5218-880
• Seiko 0746-662
• Seiko 3813-656
• Seiko 7185-228
• Seiko 7151-573
• Seiko 6214-674
• Seiko 4592-652
• Seiko 3872-487
• Seiko 3863-309
• Seiko 6353-571