Seiko 6618 Movement Details

Seiko caliber 6618 is a hand winding watch movement produced in the 1960s.
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Day / date?No
GMT / world time?No
Chronograph?No
Rate:18,000 bph
Number of jewels:17
Size / diameter:23.6mm
Height:3.85mm
Stem code: 351663
Balance wheel code: 310660
Mainspring code: 401660
Screw codes: 022150 (stud screw), 022253 (dial screw), 022256, 022257, 022450, 022452, 022461 (case screw), 022465, 022579, 022658, 022755
Notes:Used in braille watches for the visually impaired.
PDF guides: Technical guide for 6618A
Related movements: 66

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