Seiko Cal. 6240 - 355

The 6240-355 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-2d9423a5f709]

Also known as: Helmet, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1977

Related Models

• Seiko 6329-338
• Seiko 3823-159
• Seiko 6142-558
• Seiko 0712-396
• Seiko 7135-259
• Seiko 6394-249
• Seiko 4545-343
• Seiko 6370-186
• Seiko 7085-164
• Seiko 4411-804
• Seiko 5623-695
• Seiko 5268-941