Features: 
1) Audio: 
    a) Audio frequency range: 20Hz - 20kHz
    b) Output power: 5mW, 16Ω
    c) Signal to noise ratio: 90dB
    d) Distortion: <0.1%
2) File support: 
    a) File form: MPEG 1, 2, 2.5, layer 3, WNA
    b) Birthrate: 8Kbps - 320Kbps
    c) Tag: 1D3 tag V1, V2
3) USB support: 
    a) Connection type: USB1.1 (plug and play)
    b) OS: Windows 98SE, ME, 2000, XP, Linux Kernel 2.4.0 or above version, 
        Mac OS 8.6 - 10.2.3
4) General items: 
    a) Integrated memory: 128MB/256MB/512MB
    b) Power: 1 x AAA 1.5V
    c) Housing: plastic
    d) Size: 39 x 86 x 13.2mm
    e) Weight: 32g (battery excluded)

Specifications:

1) Hardware: PC, notebook or Macintosh with USB port

2) Battery: 1 x AAA

3) LCD: 96 x 26 lattice blue EL backlight SNR: 90dB

4) Earphone output power: (L) 10mW + (R) 10mW (32Ω)

5) Frequency response range: 20Hz - 20kHz

6) Record frequency: 8kHz

7) Music format: MP1, MP2, MP3, WMA, WMV, ASF, WAV

8) Record format: WAV (32Kbps), ACT (8Kbps)

9) Music sampling rate: 5Kbps - 384Kbps

10) FM tuning radio: 87 - 108MHz/76 - 96MHz

11) OSD language: English, GB2312, BIG5, Japanese or eleven kinds of 

    languages

12) USB: USB1.1 port

13) EQ: pop, rock, class, normal, jazz, bass, soft

14) Operating temp.: -10 ~ 55oC

15) Storage temp.: -20 ~ 55oC

16) Operating relative humidity: 20% - 90%

17) Storage relative humidity: 20% - 93%

18) Dimensions (L x W x H): 31 x 95 x 23mm 

19) Weight: 35g (RHD-2207MP3)

20) Operating system: Windows98 / SE / ME / 2K / XP, Mac OS 10, Linux 2.4.2



Inner packing: 

Color box



Outer packing: 

36pcs/ctn

Carton dimensions: 51.5 x 42.5 x 28.5cm

G.W.: 12.6kg

Specifications:

1) Hardware: PC, notebook or Macintosh with USB port

2) Battery: 1 x AAA

3) LCD: 132 x 32 lattice blue EL backlight 

4) SNR: 90dB

5) Earphone output power: (L) 10mW + (R) 10mW (32Ω)

6) Frequency response range: 20Hz – 20kHz

7) Record frequency: 8kHz

8) Music format: MP1, MP2, MP3, WMA, WMV, ASF, WAV

9) Record format: WAV (32Kbps), ACT (8Kbps)

10) Music sampling rate: 5Kbps-384Kbps

11) FM tuning radio: 87 - 108MHz / 76 - 96MHz

12) OSD language: English, GB2312, BIG5, Japanese or eleven kinds 

    of languages

13) USB: USB1.1 Port

14) EQ: pop, rock, class, normal, jazz, bass, soft

15) Operating temp.: -10 ~ 55oC

16) Storage temp.: -20 ~ 55oC

17) Operating relative humidity: 20% - 90%

18) Storage relative humidity: 20% - 93%

19) Dimensions (L x W x H): 31 x 83 x 21mm

20) Weight: 28g   

21) Operating system: Windows98 / SE / ME / 2K / XP, Mac OS 10, Linux 2.4.2 



Inner packing: 

Color box



Outer packing: 

36pcs/ctn

Carton dimensions: 42 x 36.3 x 35cm

G.W.: 10.4kg