Vida IT vRun Sports Bluetooth 3.0 Earphones For Nokia - XL - Lumia 630 - Lumia 520 - X2 Dual SIM Cell Phone Wireless Fitness Headset with Microphone - Volume Control (Black/Green) Bluetooth V3.0 +EDR class 2 - CVC echo/noise reduction, High Quality Stereo Sound - A2DP v1.2 and AVRCP v1.0 for high quality music streaming - Connect via micro USB cable to charge - Support: Bluetooth Headset and Handsfree Profile?HFP 1.5) - 70mAh Li-Polymer Battery Talk Time: Up to 6 Hours - Play Time: Up to 6 Hours - Standby Time: Up to 150 Hours - 3 button design MFB VOL+, VOL-, Integrated Mic Answer/End Button - Range: 10 Metres - Frequency Range:2.402-2.480GHZ, 2.4G ISM band - Audio Freq Response: 20Hz~20Khz Charge Time: Max 1.5 Hours (Charge from microUSB cable) - Dimensions: 33mm x 15mm x 9mm (Approx per earphone) Cable Length between earphone 50mm - Weight: 13 Grams - Music Playback operation, Play, Pause, Next song, Previous Song, Volume Adjustment Fully qualified single-chip Bluetooth v3.0 system - Low Power Consumption - Single-chip headset solution with advanced echo and bi-directional noise cancellation - Support for A2DP music streaming - mSBC wide band speech codec - Packet loss concealment improves the receive path audio quality in the presence of bit and packet errors within the Bluetooth link High-performance 6th Generation CVC 1-mic echo and bi-directional noise cancellation with selectable ultra-low power wind noise reduction feature - Green (RoHS compliant and no antimony or halogenated flame retardants)