Description Rapoo Wireless Headset H3050 Black Reliable 2.4GHz wireless connection provides up to 10M working range – free to enjoy high-quality, stereo audio The hidden omni-directional microphone automatically picks up your voice with remarkable clarity Recharge by using the universal mini-USB cable even while your music is still playing 2-hour charging, 6-hour enjoyment The device can works in wired mode by connect the audio-USB cable when you run out of battery and will never interrupted by empty battery Form Factor: Semi-open Host Interface: USB