Seiko Cal. 5644 - 906

The Seiko 5644-906 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-407af668fa01]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1987

Related Models

• Seiko 4545-610
• Seiko 3848-931
• Seiko 5240-869
• Seiko 0734-725
• Seiko 3815-385
• Seiko 7038-420
• Seiko 6120-919
• Seiko 6678-462
• Seiko 7056-228
• Seiko 6215-368
• Seiko 5287-266
• Seiko 6142-683