Seiko Cal. 6637 - 499

The Seiko 6637-499 represents an important milestone in Seiko's 1971 lineup. It features a Green dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-04a5ac3655ec]

Also known as: Monster

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1971

Related Models

• Seiko 6616-594
• Seiko 7116-203
• Seiko 7012-109
• Seiko 3855-366
• Seiko 7051-988
• Seiko 5249-687
• Seiko 4524-676
• Seiko 7040-535
• Seiko 5642-184
• Seiko 6190-489
• Seiko 5655-216
• Seiko 6395-744