Very few companies produced a Quartz Controlled Balance Wheel movement; only Record-Golay, Porta, Citizen, Luch and Timex. The Timex Models 62 and 63 use such a movement.
- Model 62 : quartz controlled : 21,600 bph : day and date
- Model 63 : quartz controlled : 21,600 bph : day and date
The Model 62 is rarely found. Introduced in 1972 with a quartz crystal (49,152 Hz) and electronic parts produced by Hughes Aircraft, RCA and Microma. According to Doensen, this was the first watch with an adjustable resistor for timing.
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- Timex Quartz Model 62. 1972
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- Timex Quartz Model 62. 1972
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- Timex Quartz Model 62. 1972
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- Timex Quartz Model 62. 1972
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- Timex Quartz Model 62. 1972
The Model 63 movement was introduced about 1973 and production ceased in 1980. The connection with the ubiquitous Model 40 is obvious; in fact, if you remove the circuit board and then connect the two supporting post together, the movement both looks like and runs like a Model 40!
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- Timex Q Quartz Model 63. 1976 (9885106376)
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- Timex Q Quartz Model 63. 1976 (9885106376)
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- Timex Q Quartz Model 63. 1976 (9885106376)
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- Timex Quartz Model 63
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- Timex Quartz Model 63
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- Timex Quartz Model 63
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- Timex Quartz Model 63
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- Timex Quartz Model 63
