... 1. Professional mini dv manufacturer 2. OEM factory in China 3. CE. RoHS 4. Attended 2011 ... ,write 1000-900K Byte) Flash memory Built-in 4GB, Can be inserted above16GB. Add-in-TF card Power supply 1. ... to 6 hours,Headphone playback songs in 60 hours or more MP3,WMA,WMV,ASF Headset maximum output ... 20Hz---20KHzSNR(Signal Noise Ratio): 85DbSNR: 45dBMP1,MP2,MP3,WMA,WMV,ASF,WAV Operating temperature -5 To 40 ...