Logitech H800 Wireless Headset - 2.4GHz Wireless Technology, Up to 12m Range, Flexible Rotating Boom Noise Cancelling Microphone, Fold and Go Design, Headset: 30Hz -15KHz, Microphone: 100Hz-6500Hz, On-Ear Volume Control, Rechargeable Battery, Nano USB Receiver, 1.8m USB Cable