Sony NWA805B Operation Manual page 101

101
101
Advanced Features
Adjust data format and bit rate
The playing time varies, as battery charge can be affected by the format and bit
rate of songs, videos or photos that are played.
For example, in the case of music data, a full battery charge offers about 30
hours of playing time for songs in ATRAC format at 132 kbps, but only about
33 hours for songs in MP3 format at 128 kbps. The exact playing time available
from a full charge varies with the operating conditions and environment of the
player.
Note
 Do not leave the player connected for extended periods to a laptop computer that is not
connected to AC power, because the player may discharge the computer's battery.