Seiko Cal. 6327 - 503

The Seiko 6327-503 represents an important milestone in Seiko's 1978 lineup. Powered by the 6327 caliber with 36j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-49ee90f937a1]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1978

Related Models

• Seiko 0756-342
• Seiko 6385-810
• Seiko 4569-572
• Seiko 6651-711
• Seiko 6185-481
• Seiko 5242-637
• Seiko 4444-554
• Seiko 6224-489
• Seiko 7014-991
• Seiko 7076-545
• Seiko 6641-262
• Seiko 6272-563