Seiko Cal. 6637 - 824

The Seiko 6637-824 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-60235e4e5ae4]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1970

Related Models

• Seiko 4528-224
• Seiko 3845-190
• Seiko 6329-899
• Seiko 4521-838
• Seiko 6358-980
• Seiko 7052-493
• Seiko 6121-300
• Seiko 4536-547
• Seiko 6656-673
• Seiko 6377-625
• Seiko 7123-504
• Seiko 5263-355