Seiko Cal. 4537 - 551

The Seiko 4537-551 represents an important milestone in Seiko's 1988 lineup. Powered by the 4537 caliber with 19j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-550d3fdff96f]

Also known as: Sumo, Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1988

Related Models

• Seiko 6311-577
• Seiko 0796-896
• Seiko 7116-754
• Seiko 0790-544
• Seiko 3877-605
• Seiko 0767-190
• Seiko 5245-510
• Seiko 0778-907
• Seiko 6223-892
• Seiko 6281-497
• Seiko 7140-223
• Seiko 7168-432