Seiko Cal. 6656 - 642

Released in 1989, the Cal. 6656 with design code 642 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-1b7d4119bd91]

Also known as: Bellmatic, Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1989

Related Models

• Seiko 4475-569
• Seiko 7115-410
• Seiko 4444-938
• Seiko 3831-206
• Seiko 6345-623
• Seiko 5283-678
• Seiko 6146-903
• Seiko 3886-635
• Seiko 6639-656
• Seiko 7087-985
• Seiko 6642-632
• Seiko 3885-650