Seiko Cal. 3864 - 786

This Solar model from 1976 features a 39mm PVD Black case. It features a Silver dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-e7f4fa97e960]

Also known as: Sumo, Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1976

Related Models

• Seiko 4593-554
• Seiko 4451-540
• Seiko 6161-306
• Seiko 6338-690
• Seiko 3878-870
• Seiko 6251-734
• Seiko 4493-837
• Seiko 6673-604
• Seiko 6342-744
• Seiko 4448-651
• Seiko 3865-773
• Seiko 7050-832