1: support micro-sd card or bluetooth play music
2: the collapsible spirale disaphragm makes the bass strong
3: USBconnect support independent date transfer
4: support mp3formatmusic play
5: support windows mac os 10* vista sp2 system
6: hidden 3.5mm audio terminal
7: applicale to cellphone mp3 mp4 notebook desktop or pocket pc MD and other digital device
8: unique inverted phase micro-hole design, low-frequency better
dimension
2: the collapsible spirale disaphragm makes the bass strong
3: USBconnect support independent date transfer
4: support mp3formatmusic play
5: support windows mac os 10* vista sp2 system
6: hidden 3.5mm audio terminal
7: applicale to cellphone mp3 mp4 notebook desktop or pocket pc MD and other digital device
8: unique inverted phase micro-hole design, low-frequency better
dimension
Dimension:d-60mm high_50mm
Product net Weight: 80g
Loud speaker output:3w
Signal to noise ratio(SNR):>=80db
frequency response:200HZ-16KHZ
lion battery capacity:450mah
lion battery voltage:5V
charge time:2 hours
music playing time:>=5hours