Seiko Cal. 4437 - 650

The Seiko 4437-650 represents an important milestone in Seiko's 1984 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-3271ab254ba6]

Also known as: Rally, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1984

Related Models

• Seiko 7018-743
• Seiko 5223-415
• Seiko 5219-908
• Seiko 4488-846
• Seiko 6270-574
• Seiko 6348-124
• Seiko 0739-235
• Seiko 4573-479
• Seiko 4517-400
• Seiko 5631-310
• Seiko 6353-940
• Seiko 0710-419