Sony WALKMAN NW-WM1A Help Manual page 8

Maximum recordable number of songs
Supported formats ......................................................................................................................
Troubleshooting .............................................................................................................................
System requirements ..................................................................................................................
Power/Charging .............................................................................................................................
The built-in rechargeable battery becomes depleted quickly even after the
Walkman is fully charged.
What is the battery lifespan?
Can I replace the built-in rechargeable battery myself?
microSD Cards ...............................................................................................................................
The computer does not recognize the microSD card in the Walkman.
The Walkman does not recognize a microSD card.
Media Go ........................................................................................................................................
Media Go cannot be installed on a computer. Installation of Media Go fails.
Media Go does not recognize the Walkman.
Playing Music ..................................................................................................................................
The Walkman cannot play transferred content.
A track is duplicated on the Walkman.
Others .............................................................................................................................................
You have spilled liquid (water, coffee, etc.) on the Walkman.You have
washed the Walkman in a washing machine.
The Walkman does not work properly.
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