Seiko Cal. 4521 - 783

The Seiko 4521-783 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-fe5909ec66a2]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

18j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1984

Related Models

• Seiko 4567-991
• Seiko 6228-781
• Seiko 6118-847
• Seiko 0775-847
• Seiko 3890-348
• Seiko 6342-783
• Seiko 6261-747
• Seiko 5612-258
• Seiko 3826-202
• Seiko 6247-293
• Seiko 4472-431
• Seiko 6392-180