Seiko Cal. 6391 - 557

This Solar model from 1987 features a 42mm PVD Black case. Powered by the 6391 caliber with 28j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-091e65c4875e]

Also known as: Pogue, Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1987

Related Models

• Seiko 6620-659
• Seiko 4488-180
• Seiko 4543-161
• Seiko 6346-871
• Seiko 5696-315
• Seiko 5274-594
• Seiko 7112-553
• Seiko 5260-543
• Seiko 0778-123
• Seiko 7120-254
• Seiko 0732-103
• Seiko 6186-565