Seiko Cal. 6638 - 803

Seiko 6638-803

The 6638-803 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6638 caliber with 23j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-a0c8278b2d61]

Also known as: Tuna, Arnie

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
39mm
Case Thickness
8.9mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
170m
Dial Color
Green
Jewels
23j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1967

Related Models

seikata-wm-a0c8278b2d61