Seiko Cal. 5646 - 188

Released in 1990, the Cal. 5646 with design code 188 was part of Seiko's domestic market collection. With its 22mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-7c50980da0fa]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1990

Related Models

• Seiko 7154-383
• Seiko 4572-556
• Seiko 6640-726
• Seiko 6222-326
• Seiko 7179-933
• Seiko 4519-627
• Seiko 3865-327
• Seiko 5245-684
• Seiko 7161-377
• Seiko 5638-188
• Seiko 3867-632
• Seiko 6659-241