Seiko Cal. 5665 - 509

The Seiko 5665-509 represents an important milestone in Seiko's 1981 lineup. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-f110bb8790b5]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1981

Related Models

• Seiko 5620-612
• Seiko 6379-521
• Seiko 4579-466
• Seiko 6647-131
• Seiko 0788-996
• Seiko 3890-666
• Seiko 6621-417
• Seiko 7077-690
• Seiko 0790-509
• Seiko 4451-293
• Seiko 6126-426
• Seiko 3879-127