Seiko Cal. 5637 - 827

The Seiko 5637-827 represents an important milestone in Seiko's 1988 lineup. Powered by the 5637 caliber with 34j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-428734cca43a]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

34j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1988

Related Models

• Seiko 7027-139
• Seiko 4471-450
• Seiko 5210-550
• Seiko 6650-828
• Seiko 7053-250
• Seiko 6320-214
• Seiko 7014-282
• Seiko 0744-815
• Seiko 5245-312
• Seiko 7054-392
• Seiko 6189-914
• Seiko 6265-503