Seiko Cal. 6311 - 440

Released in 1996, the Cal. 6311 with design code 440 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-9004bc549fce]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1996

Related Models

• Seiko 6179-154
• Seiko 5643-283
• Seiko 6178-490
• Seiko 6117-546
• Seiko 5242-753
• Seiko 5216-645
• Seiko 4420-777
• Seiko 7034-560
• Seiko 4511-562
• Seiko 3887-470
• Seiko 7194-724
• Seiko 3832-591