Inteoduction: Bluetooth Version: 4.1Color: Black、 White、 GoldChip: CSR4.1Standby: 150hOperating Range: 10mNoise: CVC6.0Call Duration: 6-7hCharging time: 1-2hAbout wear: 180§ rotationFunction: Voice answer、 to cable、 call waiting、 redial、 volume control、 music、 pause、 play、 noise reduction、 bilingual switch、 180 § rotation around-ear fitApplicable: Smartphone