Seiko Cal. 6642 - 937

The Seiko 6642-937 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-3b55b2da597b]

Also known as: Helmet, Sea Horse

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1971

Related Models

• Seiko 6182-102
• Seiko 5289-712
• Seiko 6320-290
• Seiko 6116-188
• Seiko 0791-315
• Seiko 0784-910
• Seiko 7130-468
• Seiko 6319-107
• Seiko 4426-877
• Seiko 6383-580
• Seiko 0721-981
• Seiko 3876-852