Additional Information: Voice controll recording: Four-recording modes for quality
selection(24K tone,16K tone, 4.K tone, 16K tone),the logest
recording time is 1840 min. *MP3 enjoy music *Voice reading-after
*With clock function(can indicate hour/min for 24 hour),timing
alert and recording function. *Transmission via USB or serial port
*Recording function for telephone conversation *Built-in
high-sensitive microphone and speaker *Two same units allow
information transmission to each other and resource sha