Vida IT Stereo Bluetooth Headset V3.0 with A2DP (Black) For Lenovo - S930 - S820 - S860 - A880 Mobile Smart Phone - Wireless Earphoness - Volume Control Bluetooth V3.0 +EDR class 2 - CVC echo/noise reduction, high quality sound - A2DP v1.2 and AVRCP v1.0 for high quality music streaming Connect via micro USB cable to charge - Bluetooth Headset and Handsfree Profile (HFP 1.5) - 80mAh Li-Polymer Battery Talk Time: Up to 7 Hours - Standby Time: Up to 120 Hours - 3 Button Design MFB VOL+, VOL- Range 10 Metres - Frequency Range:2.402-2.480GHZ, 2.4G ISM band - Receive Sensitivity of -90dBm,TX Power Max 4dBm Charge Time: Max 1.5 Hours - Dimensions: 56mm x 15mm x 9mm - Weight: 11 Grams - 1 Year Limited Warranty