Seiko Cal. 4521 - 138

The Seiko 4521-138 represents an important milestone in Seiko's 1981 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-39b431cdc704]

Also known as: Panda

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1981

Related Models

• Seiko 7089-282
• Seiko 4410-678
• Seiko 0772-874
• Seiko 0757-433
• Seiko 4449-235
• Seiko 7020-617
• Seiko 4416-770
• Seiko 4514-485
• Seiko 6226-240
• Seiko 7083-944
• Seiko 4558-680
• Seiko 6687-475