Seiko Cal. 7138 - 931

This Spring Drive model from 1988 features a 38mm PVD Black case. Powered by the 7138 caliber with 32j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-c03403161185]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1988

Related Models

• Seiko 6297-487
• Seiko 6131-261
• Seiko 6134-796
• Seiko 6688-984
• Seiko 7075-568
• Seiko 7077-463
• Seiko 5645-693
• Seiko 0754-476
• Seiko 0744-424
• Seiko 7136-593
• Seiko 6181-146
• Seiko 0762-570