Seiko Cal. 6656 - 361

The 6656-361 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-81109942a1ae]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1974

Related Models

• Seiko 5245-954
• Seiko 7018-499
• Seiko 0743-378
• Seiko 5638-265
• Seiko 3878-998
• Seiko 3877-927
• Seiko 6251-553
• Seiko 6190-118
• Seiko 3830-945
• Seiko 5249-311
• Seiko 4519-373
• Seiko 7174-600