Seiko Cal. 4540 - 520

This Solar model from 1997 features a 36mm PVD Black case. Powered by the 4540 caliber with 18j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-32c52a575f14]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1997

Related Models

• Seiko 6133-349
• Seiko 6640-172
• Seiko 0763-287
• Seiko 4532-760
• Seiko 6324-594
• Seiko 0766-228
• Seiko 6394-386
• Seiko 7141-624
• Seiko 5616-956
• Seiko 7126-149
• Seiko 6617-778
• Seiko 0787-752