Seiko Cal. 4521 - 697

This Quartz model from 1977 features a 46mm Gold-Plated case. Powered by the 4521 caliber with 36j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-619ce66a41ad]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1977

Related Models

• Seiko 6645-761
• Seiko 4446-375
• Seiko 6328-785
• Seiko 4426-374
• Seiko 6252-597
• Seiko 6350-365
• Seiko 6654-451
• Seiko 5665-150
• Seiko 5290-934
• Seiko 7016-822
• Seiko 3854-839
• Seiko 4486-108