Seiko Cal. 4428 - 646

This Automatic model from 1985 features a 36mm Stainless Steel case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-d9c13f8c8286]

Also known as: Samurai, Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1985

Related Models

• Seiko 6311-945
• Seiko 3830-231
• Seiko 4533-175
• Seiko 7060-314
• Seiko 3897-830
• Seiko 6640-127
• Seiko 5698-786
• Seiko 6652-144
• Seiko 4577-819
• Seiko 7192-208
• Seiko 6136-570
• Seiko 5224-767