The Bluetooth 2.1 wireless stereo headset headphone is an essential for your cell phone. It can connect with your phone or computer quickly. You can enjoy high quality sound via it music and phone call. There is no boring wire to connect with phone or computer via the wireless headset. Get one and enjoy your wireless wonderful music and calling. - Brand: Rapoo - Model: H6060 - Color: Black - Fashionable design - Bluetooth 2.1+EDR wireless transmission protocol supports up to 10M - Earphone specification: - Frequency response: 20Hz~20KHz - SNR: 85dB - Voltage: 3.7V - Speaker Impedance: 32ohms - RF specification: - Carrier frequency: 2404~2480MHz - Bluetooth protocol standard: V2.1+ERD - Sensitivity: -85dBm - Receiving range: 10M 360 degrees - Microphone specification: - Sensitivity: -42dB - Frequency response:100Hz~10KHz - Built-in high efficiency rechargeable lithium battery - Supports Windows XP / Vista / 7 - Comes with Quick start guide & USB cable (102cm)