Bluetooth version: V1.2 Work Frequency: 2.4GHz Operation range:10meters Body size: 48mm*22mm*62mm Body weight: 46g Talk time:8hours Standby time:180hours Charging time: 2 to 3 hours Supports headset/hands-free profile Supports between MP3 playing and mobile phone using at the same time. Supports AV stereo music receive A2DP(Advanced Audio Distribution Profile) Supports Remote control AVRCP(Audio/Video Remote Control Profile) Excellent sound quality with D.S.P. solution for echo cancellation and noise suppression compatible with most of the major mobile phones with Bluetooth of the series of mobile phone, PC, PDA, Printer etc. COMPONENTS Charger /User manual