Seiko Cal. 6240 - 396

The 6240-396 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6240 caliber with 17j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-1ef2c619ea80]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1974

Related Models

• Seiko 4464-802
• Seiko 7030-513
• Seiko 7170-168
• Seiko 0732-690
• Seiko 6254-331
• Seiko 5635-210
• Seiko 6247-145
• Seiko 5263-371
• Seiko 6338-787
• Seiko 4599-768
• Seiko 3855-914
• Seiko 6189-833