Features: Product Name: 920 bluetooth headset Bluetooth version:4.1 EDR Support:A2DP.ACRCP.HSP.HFP.SPP Speaker Impedance :16 ohm Sensitivity:110dB Communication distance:10m Frequency response:20Hz-20kHz Distortion:<0.1% (THD) talk time:8 hours standby time:210 hours Charging time:2 hours charging port:Micro-USB Function:Dust and water proof anti-sweat put shock Language Support:English French Spanish Chinese Package: 1 x Pair Headset 1 x Charging Cable 1 x Set Earplugs 1 x Headphone hanger