... Noise cancelling Mic 4. Reasonable price 5. CE/Rohs/FCC -2.4GHz wirless protocol, clearer calls, and less interference-Integrates your PC ... on either ear and quickly converts between over-the-ear and over-the-head wearing-Noise cancelling microphone cuts 60-70 ... % of backgroud noise The accessories are: Base, Headset, Handband, Earloop, Handset lifter, USB ...