Seiko Cal. 5231 - 166

The 5231-166 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-30600c1064f0]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1973

Related Models

• Seiko 6264-249
• Seiko 4572-151
• Seiko 6636-375
• Seiko 6393-240
• Seiko 6189-329
• Seiko 6319-990
• Seiko 6110-373
• Seiko 6229-860
• Seiko 3863-688
• Seiko 0774-271
• Seiko 5240-724
• Seiko 4418-393