Seiko Cal. 0731 - 615

The Seiko 0731-615 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-ab70cd67d7f5]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1968

Related Models

• Seiko 7183-488
• Seiko 6619-710
• Seiko 4473-520
• Seiko 7079-915
• Seiko 7196-908
• Seiko 5648-967
• Seiko 6262-608
• Seiko 4593-666
• Seiko 6272-563
• Seiko 7149-571
• Seiko 6645-792
• Seiko 6337-659