Seiko Cal. 5664 - 609

This Hand-Winding model from 1978 features a 41mm Titanium case. It features a Champagne dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-90c32492d350]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1978

Related Models

• Seiko 7027-562
• Seiko 6622-874
• Seiko 5261-814
• Seiko 6128-465
• Seiko 7080-757
• Seiko 7193-859
• Seiko 6212-406
• Seiko 7058-398
• Seiko 7041-347
• Seiko 5275-441
• Seiko 6390-628
• Seiko 4439-977