Seiko Cal. 4412 - 640

The 4412-640 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4412 caliber with 26j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-3907db7c187a]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1965

Related Models

• Seiko 6657-491
• Seiko 5661-287
• Seiko 4433-731
• Seiko 5232-435
• Seiko 3833-335
• Seiko 0783-879
• Seiko 6118-692
• Seiko 0759-939
• Seiko 6388-169
• Seiko 7028-507
• Seiko 5679-913
• Seiko 6332-209