Seiko Cal. 4539 - 381

The Seiko 4539-381 represents an important milestone in Seiko's 1970 lineup. It features a Navy dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-bd74a28a9fe8]

Also known as: UFO, Bellmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1970

Related Models

• Seiko 3879-610
• Seiko 6298-929
• Seiko 5673-812
• Seiko 3882-729
• Seiko 0723-182
• Seiko 7110-397
• Seiko 6130-158
• Seiko 5291-509
• Seiko 7078-307
• Seiko 5643-371
• Seiko 5214-850
• Seiko 6150-593