Seiko Cal. 5656 - 669

The Seiko 5656-669 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-fa0c35b42017]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1978

Related Models

• Seiko 7115-261
• Seiko 3871-464
• Seiko 6281-134
• Seiko 6222-724
• Seiko 6635-164
• Seiko 6159-928
• Seiko 5691-446
• Seiko 0775-385
• Seiko 0713-356
• Seiko 5277-800
• Seiko 4446-615
• Seiko 7090-188