refer the troubleshooting steps below. Call and play/pause controls now located on the top of the headset, these chrome buttons are stylish and functional, providing quick and intuitive control of primary headset functions. Jog buttons are simple. Fluid volume and music controls replace traditional volume up/down and fast forward/rewind buttons. Increased talk time up to 16 hours and music play time up to 11 hours. Please refer the User Manual before use. Experience the perfect blend of true comfort and exceptional sound with the LG Tone Pro Bluetooth Stereo Headphones with Microphone. The Tone Pro was designed for people who desire seamless transition between all aspects of their lives, whether they're at the office, on their commute or working out. This stylish headset is compatible with any Bluetooth-capable device and delivers unmatched style, near effortless ease of use and impressive audio quality.