Seiko Cal. 5663 - 251

The 5663-251 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-916c99952283]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1984

Related Models

• Seiko 5695-413
• Seiko 3821-682
• Seiko 0774-298
• Seiko 4422-398
• Seiko 5223-755
• Seiko 6657-529
• Seiko 7038-505
• Seiko 7111-468
• Seiko 6293-516
• Seiko 7074-334
• Seiko 4538-491
• Seiko 6362-240