Seiko Cal. 7140 - 644

The 7140-644 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7140 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-e345b341cf17]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1984

Related Models

• Seiko 0719-825
• Seiko 3854-244
• Seiko 4557-780
• Seiko 7130-216
• Seiko 0770-679
• Seiko 7067-614
• Seiko 7059-638
• Seiko 4426-307
• Seiko 7054-528
• Seiko 6393-460
• Seiko 5242-364
• Seiko 7078-484