Seiko Cal. 5687 - 137

The Seiko 5687-137 represents an important milestone in Seiko's 1978 lineup. Powered by the 5687 caliber with 18j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-ec31dcfcef24]

Also known as: Turtle, Rally

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1978

Related Models

• Seiko 5248-945
• Seiko 7146-353
• Seiko 6247-490
• Seiko 6193-665
• Seiko 7033-568
• Seiko 6656-275
• Seiko 7144-962
• Seiko 7199-801
• Seiko 6288-529
• Seiko 6260-369
• Seiko 6160-868
• Seiko 7155-608