Reliable 2.4GHz wireless connection provides up to 10M working range. You are free to enjoy high-quality, stereo audio. The device can works in wired mode by connect the audio-USB cable when you run out of battery. you will never interrupted by empty battery. The hidden omni-directional microphone automatically picks up your voice with remarkable clarity. Recharge by using the universal mini-USB cable - even while you"re still playing; 2-hour charging,6-hour enjoyment. Product Model: H3050B. Product Name: H3050B Wireless Headset. Product Type: Headset. Connectivity Technology: Wireless. Wireless Technology: 2.4Ghz RF. Host Interface: USB. Wireless Operating Distance: 10m (33ft). Sound Mode: Stereo. Minimum Frequency Response: 20 Hz. Maximum Frequency Response: 20 kHz. Maximum Battery Run Time: 6 Hours Earpiece Design: Over-the-head. Earpiece Type: Binaural. Integrated Microphone: Yes. Microphone Sensitivity: -42 dB. Color: Blue. Material: Plastic, Electronic Components. Form Factor: Semi-open. Height: 6.5"; Width: 6.1"; Depth: 2.4"; Weight: 3oz; Package Contents: H3050 Wireless Headset Blue, USB NANO Receiver, Quick start guide, USB Cable, 3.5mm to USB audio cable