Seiko Cal. 6257 - 256

This Solar model from 1966 features a 42mm Hardlex-Coated Steel case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-a6a068b8ff40]

Also known as: Monster, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

Related Models

• Seiko 6380-372
• Seiko 0722-441
• Seiko 6646-413
• Seiko 3819-807
• Seiko 6244-800
• Seiko 6395-176
• Seiko 4541-278
• Seiko 6135-109
• Seiko 3824-186
• Seiko 6153-883
• Seiko 3896-402
• Seiko 6230-917