Key Features ◾High definition audio technologyt ◾Built-in microphone ◾CVC6.0 noise cancellation technology ◾Voice prompt in English ◾IOS battery capacity display ◾Multi-point function Specification ◾Bluetooth version: V4.1+EDR ◾Chipset: CSR 8635 ◾Support profiles: HFP, HSP, AVRCP and A2DP ◾Operation range: 10 meters ◾Working time: 6-8 hours ◾Music time: 4-6 hours ◾Standby time: About 240 hours ◾Charging time: less than 2 hours ◾Battery capacity: 85mAh ◾Charging port: micro USB What's in the box ◾earphone ◾USB cable ◾User manualShinzo