Seiko Cal. 5657 - 327

The 5657-327 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-c3ed5656e3ff]

Also known as: Tuna, Panda

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

33j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1970

Related Models

• Seiko 5272-729
• Seiko 6330-552
• Seiko 6347-845
• Seiko 6324-723
• Seiko 3821-176
• Seiko 6349-180
• Seiko 6612-833
• Seiko 3827-623
• Seiko 7092-315
• Seiko 5639-533
• Seiko 4552-733
• Seiko 3820-878