Seiko Cal. 4540 - 621

The 4540-621 is a sought-after Solar piece from Seiko's golden era. Powered by the 4540 caliber with 22j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-57eb989dc7a9]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1993

Related Models

• Seiko 5662-453
• Seiko 5257-533
• Seiko 6210-795
• Seiko 0734-723
• Seiko 3824-693
• Seiko 4417-350
• Seiko 6293-706
• Seiko 5612-700
• Seiko 5255-794
• Seiko 5661-568
• Seiko 4580-705
• Seiko 4423-367