Seiko Cal. 5661 - 252

This Automatic model from 1973 features a 44mm Two-Tone case. Powered by the 5661 caliber with 18j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-450ca2d085d5]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1973

Related Models

• Seiko 6323-372
• Seiko 6360-689
• Seiko 4430-270
• Seiko 6159-235
• Seiko 0766-970
• Seiko 5280-463
• Seiko 6249-405
• Seiko 7090-768
• Seiko 6360-308
• Seiko 6223-878
• Seiko 6159-921
• Seiko 6129-295