Seiko Cal. 4540 - 721

This Quartz model from 1980 features a 35mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-c9d70a273e6e]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1980

Related Models

• Seiko 6627-711
• Seiko 3821-189
• Seiko 7136-377
• Seiko 5690-422
• Seiko 5290-933
• Seiko 3818-839
• Seiko 6178-877
• Seiko 3818-280
• Seiko 5695-455
• Seiko 4515-550
• Seiko 4445-225
• Seiko 7076-185