Creative came up with the HN-900 active noise canceling headset

The Creative headset is 85% capable of filtering out external noise, and its replaceable cord includes a microphone for convenient telephony.

The manufacturer wanted to make a mobile all-in-one headset, and the result was that they crammed everything imaginable into the HN-900. Its main feature is active noise reduction, with which 85% of external sounds can be "disappeared". This mode is especially useful when making phone calls, but we won't hate it when listening to music either, although this way we have to scan the world better with our eyes if we don't want to have an accident. On the other hand, silence is particularly useful for relaxation, and for noise reduction, the device uses an AAA battery, which pampers us with the feeling of blessed isolation for up to 40 hours, and if it runs out, the headphones can still be used afterwards, we just have to say goodbye to this extra. 

40 mm neodymium magnetic membranes with a frequency range of 20 Hz to 20 kHz are responsible for sound generation. The noise reduction is -18 dB (i.e., 85%) while the impedance is 290 Ohms (measured at least during active noise filtering). 

The high-end nature of the HN-900 is also indicated by the replaceable, one and a half meter cable with a microphone, as well as the "record" button known from iPhone headsets, so that we can make calls more easily. The manufacturer also placed a gold-plated connector at the end of the cable, and an airplane adapter is included in the box. The 168 gram device is priced at $99.