Seiko Cal. 6661 - 516

Released in 1980, the Cal. 6661 with design code 516 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-6bb9db318e40]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1980

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