Seiko Cal. 5257 - 721

This Solar model from 1982 features a 36mm Hardlex-Coated Steel case. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-1b9bb53344ea]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1982

Related Models

• Seiko 7078-840
• Seiko 0765-576
• Seiko 3864-997
• Seiko 7133-118
• Seiko 3834-258
• Seiko 6681-112
• Seiko 6677-652
• Seiko 7170-917
• Seiko 4422-703
• Seiko 4421-842
• Seiko 3845-858
• Seiko 5273-658