Sangean Utility Radio U3 Instrucciones De Manejo página 7

Power the radio
Note:
Insert back up battery prior to main batteries.
Back up battery is to back up the preset stations and also clock.
It is necessary to insert back up battery (2 x UM-3 1.5V, not supplied)
for memory back up even if you use AC power only. Without the back
up battery, time and preset station will get lost if remove AC power
cord from AC outlet or during AC power failure.
Back up battery compartment is located inside the main battery
compartment. Insert 2 x AA size (UM-3) battery and ensure the
battery is inserted in accordance with the diagram shown.
GB
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