| USB Interface |
USB2.0 high speed |
| Capacity |
1GB, 2GB，4GB，8GB(Optional) |
| Storage Device |
Removable Storage Device |
| Card type |
N/A |
| A-B Repeat |
Support |
| Recording |
Microphone Recording， FM Recording（Only for EM643JB） |
| EQ Mode |
Normal, Rock, Pop, Classical, Soft , Jazz, Bass，User EQ，SRS WOW |
| Supported Language |
Simple Chinese ,Traditional Chinese, English |
| Play Mode |
Normal, Repeat one, Folder，Repeat Folder，Repeat all, Random，Intro |
| FM Radio |
Only for EM643JB |
| VBR |
Support |
| Read speed |
SLC：5.0 ~ 6.0 MB/S MLC：3.5~4.5MB/S |
| Write speed |
SLC:4.0~5.0MB/S MLC: 1.5~2.0MB/S |
| Audio format |
MP3，WMA，ASF |
| Bit Rate |
MP3,WMA:8Kbps—320Kbps；ASF：8kbps－448kbps |
| Recording Length |
ACT：1GB about 280 hours（8Kbps/8KHz） |
| FM Frequency Range |
87.5-108MHz/76-90MHz（Normal Band/Japan Band ）（Only for EM643JB） |
| FM Scan Mode |
Manual/Automatic Search（Only for EM643JB） |
| Number of Preset Channels |
20（Only for EM63JB） |
| Battery Life |
6-8Hours |
| LCD Display |
96*64(backlight for white) |
| SNR |
90dB above |
| Frequency Response Range |
20HZ—20KHZ |
| Record format |
MIC REC ：ACT （8Kbps/8KHz）; FM REC：WAV(32Kbps/8KHz) |
MP4/ mp3 Players
