This 2 in 1 headset can be used for sports and business. Keep your hands free and guarantee safety while driving. Enjoy music or answer calls, whatever you want. With in-ear headset design, the BOROFONE BE10 Bluetooth earbud can bring a stereo sound that most Bluetooth earbud can\'t offer. This headset is designed for 2 ways of using: wireless headset for business; wired earphone for sports.With Bluetooth 4.1 technology is faster than other devices, the transmission distance is up to 20m. Enjoy perfect compatibility, for iPhone, iPad, Android smartphones and tablets, Windows devices, and all popular Bluetooth devices.Impedance up to 16 ohm. Showing a clear, high-quality music effects. With in-ear headset design, bringing you the stereo sound.Built-in 50mAh Li-ion battery. Continued strong music time up to 4 hours, so as talk time, standby time to 60 hours.Intuitive, easy access controls for freely switching songs, pause / play, and a built-in mic for effortless call handling. Helping avoid removing earbuds from ear or dealing with tangled wires.