Seiko Cal. 3840 - 610

The 3840-610 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-42d4fa2fe426]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

19j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1970

Related Models

• Seiko 7083-674
• Seiko 3856-248
• Seiko 6314-501
• Seiko 6361-642
• Seiko 4563-785
• Seiko 6324-434
• Seiko 5641-761
• Seiko 4427-408
• Seiko 6115-107
• Seiko 6254-256
• Seiko 5699-193
• Seiko 6168-420