features advanced true wireless (TWS) BT 4.2 technology, built-in high-grade microphone speaker, hands-free function and lightweight design. It will offer you an amazing experience; you can greatly enjoy your favorite music when doing sports. Features: [Advanced BT Technology] Latest true wireless (TWS) BT 4.2 technology ensures transmitting strong signal in high quality high speed and offering high-fidelity stereo music. [Unique Design] Wireless dual ear stereo design left and right ear channel separation; you can use its Left and Right Ear Headset solely (Single Track Mode), and it also can be used in pairs (Stereo Mode). [Emergency Power Bank] The included 1600mAh charging box can be used as a portable power bank to offer emergency power for smartphones and tablets. [Multi-point Technology] It can simultaneously connect two smarts phone, so you can seamlessly switch between your business and personal phones. [Easy Operation] With a multifunctional button, easy to power on/off the earphone, play/pause music, switch to the next/last song, receive/hang up incoming calls and activateSiri for iPhone.