Amico 3 Pcs Black Silver Tone Metal Plastic Nonslip Pedal Cover Set for Car STRONG SIGNAL FANTASTIC SOUND QUALITY Fantastic TWS (True Wireless) technology makes wireless synchronous connection stereo pairing come true. You can connect them with multiple Bluetooth devices in the range of 10m(about 33feet).Eliminate stethoscope effect of all wired headphones and noise reducing.It contain TWO pieces which can be used separately with someone sharing music or broadcast (within reasonable distance), or you can enjoy the stereo sound by using them both or alone.