Audio Format: 128 kbps
Maximum recordable number of photos that can be transferred
(Approx.)
Max. 20,000
Recordable number of photos may be less depending on file sizes.
Maximum recordable number of voice recordings
Maximum recordable number of voice recording files: 4,000
Maximum recordable number of voice recording folders: 255
Maximum recordable number of voice recording files in each folder: 255
Maximum recordable number of playlists
Maximum transferrable number of playlists: 8,192
Maximum containable number of songs in each playlist: 999
Capacity (User available capacity) (*1)
NWZ-E453: 4 GB (Approx. 3.35 GB = 3,602,841,600 bytes)
NWZ-E454: 8 GB (Approx. 6.99 GB = 7,513,178,112 bytes)
NWZ-E455: 16 GB (Approx. 14.1 GB = 15,224,602,624 bytes)
(*1) Available storage capacity of the player may vary.
A portion of the memory is used for data management functions.
Output (headphones)
Frequency response
20 to 20,000 Hz (when playing data file, single signal measurement)
FM radio
FM Frequency range
87.5 to 108.0 MHz
(You cannot use the FM radio function while the player is installed into the speaker system.)
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 the player)
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.
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