Seiko Cal. 4548 - 420

The Seiko 4548-420 represents an important milestone in Seiko's 1974 lineup. With its 21mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-9075a3d4dfa1]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1974

Related Models

• Seiko 6226-669
• Seiko 6652-190
• Seiko 0775-204
• Seiko 4529-988
• Seiko 0717-155
• Seiko 0743-316
• Seiko 4483-594
• Seiko 6279-875
• Seiko 6623-432
• Seiko 6341-175
• Seiko 6324-759
• Seiko 6273-111