Seiko Cal. 5660 - 634

The Seiko 5660-634 represents an important milestone in Seiko's 1985 lineup. Powered by the 5660 caliber with 28j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-2a450c6aaddc]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Cream

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1985

Related Models

• Seiko 6272-903
• Seiko 7056-216
• Seiko 6390-540
• Seiko 5269-165
• Seiko 3866-165
• Seiko 4466-189
• Seiko 6223-946
• Seiko 4483-372
• Seiko 5243-401
• Seiko 6182-622
• Seiko 4421-714
• Seiko 7087-585