Seiko Cal. 5663 - 396

The 5663-396 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5663 caliber with 27j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-6d93efb82e4b]

Also known as: Tuna, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1991

Related Models

• Seiko 6648-829
• Seiko 6381-949
• Seiko 5641-866
• Seiko 6685-200
• Seiko 3812-137
• Seiko 6195-988
• Seiko 6175-984
• Seiko 4449-954
• Seiko 6627-162
• Seiko 6385-323
• Seiko 5285-516
• Seiko 6192-896