Seiko Cal. 4412 - 550

This Hand-Winding model from 1975 features a 42mm Stainless Steel case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-6446adf7744a]

Also known as: Helmet, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

Related Models

• Seiko 6688-149
• Seiko 7190-805
• Seiko 6220-241
• Seiko 4493-460
• Seiko 0770-436
• Seiko 5227-722
• Seiko 6166-686
• Seiko 4442-285
• Seiko 6350-442
• Seiko 4523-861
• Seiko 7181-553
• Seiko 4459-988