Seiko Cal. 5646 - 437

The Seiko 5646-437 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-c8d20045013d]

Also known as: Goldfeather, Flighty

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1979

Related Models

• Seiko 7180-492
• Seiko 4428-846
• Seiko 0776-849
• Seiko 6213-847
• Seiko 3863-309
• Seiko 0759-641
• Seiko 3872-374
• Seiko 7165-450
• Seiko 7022-170
• Seiko 4428-550
• Seiko 6133-747
• Seiko 5664-866