Seiko Cal. 5643 - 661

The Seiko 5643-661 represents an important milestone in Seiko's 1996 lineup. It features a Silver dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-1ae76f07f380]

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1996

Related Models

• Seiko 4525-897
• Seiko 7029-952
• Seiko 4417-901
• Seiko 6291-418
• Seiko 4419-360
• Seiko 5662-794
• Seiko 3849-594
• Seiko 3831-711
• Seiko 5682-159
• Seiko 3867-395
• Seiko 6644-829
• Seiko 6180-510