Seiko Cal. 5285 - 721

The Seiko 5285-721 represents an important milestone in Seiko's 1979 lineup. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-82f1c9012f8d]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1979

Related Models

• Seiko 6231-204
• Seiko 6131-337
• Seiko 6328-531
• Seiko 6128-380
• Seiko 4514-568
• Seiko 7095-717
• Seiko 5693-587
• Seiko 6654-443
• Seiko 4547-699
• Seiko 6314-144
• Seiko 7016-447
• Seiko 5220-180