Seiko Cal. 6638 - 857

The 6638-857 is a sought-after Quartz piece from Seiko's golden era. With its 22mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-1a1fcc8015ca]

Also known as: Samurai, Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1993

Related Models

• Seiko 4578-388
• Seiko 3832-220
• Seiko 6118-290
• Seiko 7074-899
• Seiko 5638-571
• Seiko 6651-159
• Seiko 5233-500
• Seiko 5237-821
• Seiko 4478-123
• Seiko 6657-176
• Seiko 4520-252
• Seiko 7043-583