Seiko Cal. 3898 - 503

The Seiko 3898-503 represents an important milestone in Seiko's 1968 lineup. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-2f198c7ed8f7]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1968

Related Models

• Seiko 0745-200
• Seiko 6185-569
• Seiko 6271-930
• Seiko 3822-742
• Seiko 4433-744
• Seiko 6381-924
• Seiko 6639-781
• Seiko 6132-996
• Seiko 6264-578
• Seiko 6355-182
• Seiko 0710-749
• Seiko 4563-578