Seiko Cal. 5231 - 727

The Seiko 5231-727 represents an important milestone in Seiko's 1970 lineup. It features a White dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-d74a617621c1]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1970

Related Models

• Seiko 6196-278
• Seiko 4439-310
• Seiko 4577-923
• Seiko 6623-334
• Seiko 5697-806
• Seiko 6691-404
• Seiko 4589-646
• Seiko 5225-401
• Seiko 7164-202
• Seiko 5653-199
• Seiko 4436-469
• Seiko 4451-484