Seiko Cal. 6310 - 653

Released in 1982, the Cal. 6310 with design code 653 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-6a1ce84aae81]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1982

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