Seiko Cal. 4521 - 777

This Kinetic model from 1981 features a 43mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-ca5bf8801b4e]

Also known as: Helmet, Rally

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1981

Related Models

• Seiko 4469-101
• Seiko 6611-874
• Seiko 6388-530
• Seiko 5676-246
• Seiko 5264-485
• Seiko 5224-546
• Seiko 7083-374
• Seiko 6356-653
• Seiko 5299-453
• Seiko 6341-815
• Seiko 6223-299
• Seiko 7169-160