Seiko Cal. 5661 - 773

The Seiko 5661-773 represents an important milestone in Seiko's 1974 lineup. Powered by the 5661 caliber with 27j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-04266813f81e]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1974

Related Models

• Seiko 6176-791
• Seiko 7146-236
• Seiko 3826-429
• Seiko 5247-187
• Seiko 4539-353
• Seiko 6258-112
• Seiko 5236-643
• Seiko 6372-170
• Seiko 4418-951
• Seiko 6381-723
• Seiko 6181-148
• Seiko 6176-508