... bass round,wireless to mobile phone. Specification * Bluetooth Version, V2.0* Talking time,15 Hours* Standby time,240 Hours* ... Power supply, DC 5V* Battery,rechargeable 460mAh Li-ion battery* Weight,77G * Measurement,15X15X6.5mm * Effective range ... talking is ended. * Support Voice * MP3 player with card inserting. MP3 player headphones bluetooth headphone ...