Seiko Cal. 4521 - 528

The Seiko 4521-528 represents an important milestone in Seiko's 1991 lineup. It features a Navy dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-4a3f6642c6bb]

Also known as: Turtle, Bullhead

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1991

Related Models

• Seiko 7034-162
• Seiko 5651-351
• Seiko 6323-276
• Seiko 4485-135
• Seiko 5256-773
• Seiko 3893-797
• Seiko 6231-631
• Seiko 0778-226
• Seiko 7152-342
• Seiko 7155-370
• Seiko 7121-683
• Seiko 6164-529