Sony Walkman NWZ-E455 User Manual page 247

Note
Even if the player is turned off for an extended period, a small amount of battery power is
still consumed.
Battery life may vary depending on volume setting, conditions of use, and ambient
temperature.
Music
Playback at MP3 128 kbps
Playback at WMA 128 kbps
Playback at AAC-LC 128 kbps
Playback at Linear PCM 1,411 kbps Approx. 56 hours
Video
Playback at MPEG-4 384 kbps
Playback at AVC Baseline 384 kbps Approx. 10 hours
Playback at WMV 384 kbps
FM radio
Receiving FM broadcasting
Voice recording
Recording
Player settings which affect battery life
Setting
[Screensaver]:[On/Off] (*1)
[Details]
[Screensaver]:[Delay] (*2)
[Common
[Details]
Settings]
[Brightness] (*3)
[Battery Care] (*4)
[Equalizer] (*5)
[VPT(Surround)] (*5)
[Details]
[DSEE(Sound Enhance)]
(*5) [Details]
[Clear Stereo] (*5)
[Music
[Dynamic Normalizer] (*5)
Settings]
[Details]
[DPC (Speed Control)] (*7)
[Details]
[Display Lyrics] (*8)
[Details]
[Karaoke/Language Study]
(*9) [Details]
(*1) The [Off] setting shortens the battery life for continuous music playback by about 85% compared with
the [On] setting.
247
Approx. 50 hours
Approx. 50 hours
Approx. 48 hours
Approx. 10 hours
Approx. 10 hours
Approx. 20 hours
Approx. 9 hours
Basic setting of battery life
measurement (Default setting)
[On]
[30 Sec]
[Details] [3]
[Details] [Off]
[Details] [None] (*6)
[None]
[Off]
[Details] [Off]
[Off]
[Off]
[On]
[Off]