Con esta traducción.
Esta revisiones son costosas y/sencillas .
The high beat of the movement should theoretically be beneficial in minimising perturbations to the balance, and thus help to maintain a steady rate. The downside to this is the need for more frequent servicing—say every 3-4 years as opposed to 5-7 years for a slower beat movement. On the positive side, the ubiquity of ETA movements and parts should assist in keeping the Airspeed running economically for many years to come.