Seiko Cal. 5663 - 240

The Seiko 5663-240 represents an important milestone in Seiko's 1970 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-5be1cc30105c]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

100m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1970

Related Models

• Seiko 7084-832
• Seiko 6396-862
• Seiko 7138-752
• Seiko 6691-233
• Seiko 0785-364
• Seiko 6162-795
• Seiko 4514-541
• Seiko 7191-958
• Seiko 6183-378
• Seiko 6172-474
• Seiko 6655-270
• Seiko 0748-334