Seiko Cal. 4521 - 150

The Seiko 4521-150 represents an important milestone in Seiko's 1972 lineup. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-f522ebe8d993]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1972

Related Models

• Seiko 7126-259
• Seiko 4438-496
• Seiko 6634-934
• Seiko 0743-813
• Seiko 4551-598
• Seiko 3846-199
• Seiko 7134-114
• Seiko 6680-669
• Seiko 5229-217
• Seiko 4574-593
• Seiko 5642-258
• Seiko 5688-553