Seiko Cal. 4521 - 602

The 4521-602 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4521 caliber with 29j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-9a21c4e33d5a]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1974

Related Models

• Seiko 5655-633
• Seiko 6372-964
• Seiko 6282-376
• Seiko 6379-877
• Seiko 5279-447
• Seiko 4418-894
• Seiko 7089-865
• Seiko 6257-800
• Seiko 6252-390
• Seiko 5299-279
• Seiko 4471-209
• Seiko 0714-710