Operating Temperature; Power Source - Sony Walkman NWZ-E473 Help Manual

Digital Noise Canceling function
Environment setting: Bus/Train / Airplane / Office
Noise Canceling Modes: Normal Mode / Quiet Mode
Total Noise Suppression Ratio (*1) (NWZ-E573/E574/E575 only)
Approx. 17 dB (*2)
(*1) Under Sony measurement standard.
(*2) Equivalent to approx. 98.0% reduction of energy of sound compared with not wearing headphones.
([Select NC Environment]: [Airplane])
FM radio
FM Frequency range: 87.5 MHz to 108.0 MHz
IF (FM)
128 kHz
Antenna
Headphone cord antenna
Interface
Headphone: Stereo mini-jack
WM-PORT (multiple connecting terminal): 22 pins
Hi-Speed USB (USB 2.0 compliant)

Operating temperature

5 °C to 35 °C (41 ºF to 95 ºF)

Power source

Built-in rechargeable lithium-ion battery
USB power (from a computer via a USB connector of your Walkman)
Charging time
USB-based charging
Approx. 3 hours (full charge), Approx. 1.5 hours (approx. 80 %)
Battery life (continuous playback)
Actual battery life may vary depending on settings. The estimated battery usage hours shown
below are based on typical usage conditions with "Basic setting of battery life measurement" as
shown in the table below.
Note
Even if your Walkman 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.
NWZ-
Music E473/E474/E475/
E473K/E474K
Playback at MP3 128
Approx. 36 hours
kbps
Playback at Linear
Approx. 36 hours
PCM 1,411 kbps
Video
Playback at MPEG-4
227
NWZ-E573/E574/E575
Noise Canceling Noise Canceling
function is off function is on
Approx. 36 hours Approx. 30 hours
Approx. 36 hours Approx. 30 hours
Noise Canceling Noise Canceling
function is off function is on