Seiko Cal. 6637 - 529

This Solar model from 1991 features a 46mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-d562327910d5]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1991

Related Models

• Seiko 6238-768
• Seiko 4547-992
• Seiko 6677-918
• Seiko 4544-689
• Seiko 5616-195
• Seiko 6245-390
• Seiko 6689-318
• Seiko 5246-897
• Seiko 5681-766
• Seiko 4561-504
• Seiko 7195-755
• Seiko 5682-689