Seiko Cal. 5681 - 198

Released in 1971, the Cal. 5681 with design code 198 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-2e9847549044]

Also known as: UFO, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1971

Related Models

• Seiko 5645-337
• Seiko 6167-127
• Seiko 7151-723
• Seiko 0799-275
• Seiko 6289-385
• Seiko 3880-646
• Seiko 6298-490
• Seiko 6236-436
• Seiko 6696-521
• Seiko 6226-939
• Seiko 6659-137
• Seiko 6166-507