Seiko Cal. 5640 - 907

The 5640-907 is a sought-after Quartz piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-bb860301f0d0]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1977

Related Models

• Seiko 4563-718
• Seiko 6238-345
• Seiko 5253-340
• Seiko 0775-275
• Seiko 6391-135
• Seiko 6683-736
• Seiko 6113-525
• Seiko 7149-290
• Seiko 7096-859
• Seiko 3891-487
• Seiko 6187-694
• Seiko 6372-687