Seiko Cal. 4521 - 533

The 4521-533 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-72f2de47aabd]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1976

Related Models

• Seiko 5231-197
• Seiko 5684-859
• Seiko 5670-862
• Seiko 6637-783
• Seiko 6361-590
• Seiko 5690-315
• Seiko 7030-827
• Seiko 3855-427
• Seiko 5695-259
• Seiko 7095-254
• Seiko 4420-164
• Seiko 7045-297