Kenwood M1GD50 - Manual (Page 30)

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Specifications
Built-in flash memory
M2GD55: 2 GB * 1
M1GD50: 1 GB * 1
Headphone output
: 3.5 mm stereo mini jack
: 3.5 + 3.5 mW/ 16 Ω
Interface
: USB 2.0 Full Speed
(USB 1.1 compatible)
Display
: 1 inch OLED * 2
Main unit dimensions (W × H × D)
M2GD55:
38.0 mm × 92.5 mm × 11.5 mm
(1-1/2 Ч 3-5/8 Ч 7/16 inch)
M1GD50:
38.0 mm × 92.5 mm × 12.5 mm
(1-1/2 Ч 3-5/8 Ч 1/2 inch)
Weight (Net)
: Approx. 38 g (Approx. 0.08 lbs)
Operational Temperature Range
: 5 °C – +35 °C
(without condensation)
Battery type
: Built-in Li-ion rechargeable battery
Battery operation time * 
MP3 (128 kbps) : Approx. 21 hours
WMA (128 kbps) : Approx. 16 hours
Maximum number of files
: 1,000
Max. recording time/ tracks * 
M2GD55: Approx. 32 hours/
Approx. 480 tracks
M1GD50: Approx. 16 hours/
Approx. 240 tracks
Playback format
MP3
Sampling rate: 32/ 44.1/ 48 kHz
Bit rate: 16 - 320 kbps
Variable bit rate *
5 : 16 - 320 kbps
ID3 tag: ver. 2.2/ 2.3/ 2.4
WMA (DRM 10 compatible)
Sampling rate: 32/ 44.1/ 48 kHz
Bit rate: 32 - 320 kbps
Variable bit rate *
5 : 32 - 355 kbps
(Not supported by Professional,
Lossless, or Voice.)
PC system configuration
requirements * 
OS
: Microsoft® Windows® Vista/
XP/2000 (Not supported by 64 bit
version OS.)
USB connector
: Compliant to USB 1.1/2.0 standard
• Kenwood follows a policy of continuous
advancements in development. For this
reason specifications may be changed
without notice.
*1 The actual available space may be
smaller than specified due to the
presence of the system file area.
*2 The organic EL display is fabricated with
high-precision technology. However,
there may be some pixels that are
permanently lit or extinguished. (This is
not a failure.)
*3 Typical value when the provided
headphones are used in the
"Normal" sound mode. This value is
not a guaranteed value. It may be
shorter depending on the ambient
temperatures and operating conditions.
*4 Assuming that each tracks is in the 128
kbps MP3/ WMA format with playback
time of about 4 min.
*5 Audio data with variable bit rate (VBR)
may sometimes go beyond the bit rate
range of the Player. In this case, the
Player cannot play the audio data.
*6 All of the above specified PC
environment does not guarantee full
operation of the Player.
*6 Use a PC in which either OS mentioned
above is preinstalled. Operation is
not guaranteed on a PC running an
upgraded OS or a PC assembled by
yourself.
Appendix