Seiko Cal. 6615 - 506

The 6615-506 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-2e3c30f94ca2]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1966

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