Seiko Cal. 7137 - 644

The Seiko 7137-644 represents an important milestone in Seiko's 1997 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-fff293ba8e6b]

Also known as: Bullhead, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1997

Related Models

• Seiko 3892-379
• Seiko 6115-917
• Seiko 7084-638
• Seiko 6695-410
• Seiko 6385-685
• Seiko 0737-835
• Seiko 0784-513
• Seiko 7140-416
• Seiko 7132-458
• Seiko 6157-787
• Seiko 6135-503
• Seiko 4418-267