shift of the hand in the forward direction the disadvantage of such a friction spring is that it produces a loss of torque amounting to between 10 and 30 the output torque of the electric motor of an electronic timepiece can be generally expressed by the formula where a is the current flowing through the coil and t is the number of turns of wire in the coil accordingly the larger the current flowing through the coil and the greater the number of turns the larger is the output torque where the friction spring is used the required current for operation of the timepiece is about 30 greater than in the constructions in accordance with the present invention which will be described alternatively the number of turns in the coil must be increased by from 10 to 30 to achieve the desired torque accordingly the use of such a friction spring constitutes a serious disadvantage in further reduction of the size of an electronic timepiece in addition to the disadvantages with respect to size accruing from the use of a friction spring incorporation of such a spring requires additional production time as well as materials which must be constructed and assembled with great precision so that the cost of such a structure is great another disadvantage of the conventional construction is.