Seiko Cal. 6616 - 515

This Spring Drive model from 1977 features a 44mm Hardlex-Coated Steel case. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-6605a5bb4bd6]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1977

Related Models

• Seiko 7170-679
• Seiko 4493-874
• Seiko 6243-587
• Seiko 6267-267
• Seiko 7064-635
• Seiko 6342-847
• Seiko 3877-934
• Seiko 0735-700
• Seiko 6121-531
• Seiko 4468-770
• Seiko 3830-142
• Seiko 6625-883