Seiko Cal. 7140 - 700

This Spring Drive model from 1983 features a 36mm Titanium case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-6144aeaed665]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1983

Related Models

• Seiko 7020-700
• Seiko 6241-414
• Seiko 4427-241
• Seiko 5274-674
• Seiko 4479-527
• Seiko 7136-926
• Seiko 7083-222
• Seiko 6656-106
• Seiko 4420-565
• Seiko 4457-656
• Seiko 5269-159
• Seiko 6123-349