1) Bluetooth wireless connection ,getting out of the trouble with surrouding you for line-control headset,so it's more convenient to communicate. 2) You can adjust the ear hook .Appreciate the flexible ,soft-touch headset that delivers a comfortable fit on either ear. 3) Fashionable appearance ,smart model portable. 4) With volume control button. 5) Especially design Bluetooth indicator ,which is very noble. 6) Take advantage of the noise -canceling microphone to get great sound from noisy environments. Specifications: 1) Bluetooth V1.2 compliant 3) Frequency: 2.4GHz~2.4835GHz ISM band 4) Transmitter power: 1mW 5) Output power: 0 dBm (class II) 6) Long talk time: up to 6 hours 7) Stand by time: up to 200 hours 10) Typical charging time: 1.5 to 2 hours 11) Operation temperature: -10 to +45degreeC 12) Color available: blown,black,blue