Seiko Cal. 4542 - 637

The Seiko 4542-637 represents an important milestone in Seiko's 1982 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-59c188982bdd]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1982

Related Models

• Seiko 4546-325
• Seiko 6189-156
• Seiko 7124-327
• Seiko 4418-973
• Seiko 4425-950
• Seiko 0713-193
• Seiko 5649-600
• Seiko 4488-359
• Seiko 0719-633
• Seiko 5665-515
• Seiko 6311-155
• Seiko 5613-315