Seiko Cal. 4481 - 851

The Seiko 4481-851 represents an important milestone in Seiko's 1971 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-5b56e173c869]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1971

Related Models

• Seiko 5212-673
• Seiko 5695-779
• Seiko 6627-911
• Seiko 6659-142
• Seiko 0751-578
• Seiko 0717-796
• Seiko 7032-988
• Seiko 6210-344
• Seiko 5235-271
• Seiko 4564-159
• Seiko 3823-228
• Seiko 0783-660