Seiko Cal. 6331 - 774

The 6331-774 is a sought-after Solar piece from Seiko's golden era. Powered by the 6331 caliber with 36j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-dc5faf65dee4]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1975

Related Models

• Seiko 6287-179
• Seiko 3862-956
• Seiko 4445-151
• Seiko 5684-748
• Seiko 6374-753
• Seiko 6158-805
• Seiko 6346-160
• Seiko 6297-959
• Seiko 7132-118
• Seiko 6294-863
• Seiko 6224-671
• Seiko 6355-208