Seiko Cal. 6257 - 603

The Seiko 6257-603 represents an important milestone in Seiko's 1981 lineup. It features a Black dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-baf112067e0f]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1981

Related Models

• Seiko 0777-339
• Seiko 0717-555
• Seiko 7135-789
• Seiko 5242-597
• Seiko 7034-423
• Seiko 7063-843
• Seiko 4586-279
• Seiko 5650-469
• Seiko 6684-125
• Seiko 6658-153
• Seiko 6627-508
• Seiko 0798-902