Seiko 5D44 Manual - Page 4

English FEATURES Unlike the conventional quartz watch powered by the button-type battery, the KINETIC is an analog quartz watch equipped with an Automatic Generating System, the unique technology developed by SEIKO, which generates electrical energy to power the watch by utilizing the movement of the arm or wrist, and stores it in the KINETIC ELECTRICITY STORAGE UNIT (KINETIC E.S.U.) The watch is equipped with a direct drive indicator that constantly displays how long the watch will keep operating. The direct drive indicator also dynamically displays the electric power generation status while charging the watch. CAUTION ● The movement of your arm while the watch is worn generates electrical energy to power the watch. Even if the watch is worn on your arm, it will not be charged while your arm is not in motion. ● It is recommended that the watch be worn on your wrist daily for at least 10 hours. ● If you do not wear the watch for more than the continuous operating time that it displays, charge the watch as necessary so as not to stop operation of the watch until the next time you wear it. Refer to "How to charge and start the watch" for further details. ❖ THE KINETIC E.S.U. is an abbreviation for KINETIC ELECTRICITY STORAGE UNIT, which is the name of the power source employed in the KINETIC movements.