The selling point of Voice postcard USB:
1. Easy to use:
* Like mp3 player, MP3 paper card,Turn switch to On,then Press button "Play" to hear music and sound, press button to pause music;
* Any music you can upload by usb from computer; And you can delete music of the postcard card;
* Press button to choose next music or the previous music;
* Press button to control volume+/-;
2. Long time use:
* Postcard built-in rechargeable battery,can be used again and again for long time;
* Voice postcard with wwitch "On/off",not use,then can keep switch off to extend battery life.
3. Simple but Fashion:
* Postcard is simple, like paper card,EVA Card;But fashion,printing blessing "Happy birthday","Merry Christmas",...company and product promotion information. Not only to see,but also can hear sound or music,more interesting and more rich life.
Related to USB Sound birthday card: