Seiko Cal. 3864 - 647

The Seiko 3864-647 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-98af0697ad74]

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1977

Related Models

• Seiko 5286-436
• Seiko 5634-109
• Seiko 4488-458
• Seiko 7036-407
• Seiko 5622-394
• Seiko 5623-915
• Seiko 0772-778
• Seiko 0765-739
• Seiko 7094-858
• Seiko 5632-639
• Seiko 6382-293
• Seiko 4566-461