Features:[HIGH FIDELITY SOUND]Built in noise reduction technology, our bluetooth V5.0 earpiece ensures and stable signal quality, and guarantees outstanding sound quality.[SUPER LONG BATTERY LIFE]Improved lithium polymer battery allows seamless enjoyment of music for up to 9 hours and super long standby for 180hours, with a quick charge of only 2 hours.[DUAL MIC NOISE CANCELLATION]Dual-Microphones with CVC 6.0 noise isolation technology cancels disruptive background noise efficiently like traffic or crowds.[2 DEVICES AVAILABLE]Our headset allows two Bluetooth cellphones to connect at the same time. No matter which phone is called, you will never miss.[UNIVERSAL COMPATIBLE]Adopted advanced Bluetooth V5.0 with CSR technology, and fast pairing with all iOS and Android system smartphone and PAD.