Seiko Cal. 3811 - 767

This Spring Drive model from 1987 features a 38mm Two-Tone case. It features a Silver dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-a93cc90b6b28]

Also known as: Sumo, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1987

Related Models

• Seiko 7138-539
• Seiko 5661-641
• Seiko 4480-616
• Seiko 4518-126
• Seiko 7140-888
• Seiko 6610-687
• Seiko 5667-984
• Seiko 6691-427
• Seiko 5682-809
• Seiko 5633-475
• Seiko 6124-555
• Seiko 7054-873