Sennheiser HD 4.50 BTNC Owner's Manual
HD 4.50BTNC
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The HD 4.50BTNC wireless headphones
Bluetooth
The headphones comply with the
Bluetooth 4.0 standard and are compatible with
all
Bluetooth 1.1, 1.2, 2.0, 2.1, 3.0 and 4.0 devices with the following Bluetooth
profiles: HFP (Hands-Free Profile), HSP (Headset Profile), AVRCP (Audio Video
Remote Control Profile) and A2DP (Advanced Audio Distribution Profile). The
headphones provide wireless freedom to give hands-free convenience during
phone calls or when listening to music.
Remote Control Profile) and A2DP (Advanced Audio Distribution Profile). The
headphones provide wireless freedom to give hands-free convenience during
phone calls or when listening to music.
NFC
Near Field Communication (NFC) is a short-range wireless technology that en-
ables connection and communication between NFC-capable electronic devices
by placing them near one another or with a single touch.
ables connection and communication between NFC-capable electronic devices
by placing them near one another or with a single touch.
NoiseGard
The
NoiseGard™ active noise compensation system is based on the principle
of cancelling out sound using “anti-sound”. Tiny microphones pick up low-
frequency ambient noise near the ear. The
frequency ambient noise near the ear. The
NoiseGard electronics use this noise
to generate a sound wave which is the exact opposite, the effect being that the
polarity reversed signal cancels most of the outside noise.
polarity reversed signal cancels most of the outside noise.
aptX®
With aptX® audio coding, you can be assured of crisp, pure and full stereo
sound. It allows you to not only hear, but experience and feel the audio as it was
intended. Utilizing aptX®,
sound. It allows you to not only hear, but experience and feel the audio as it was
intended. Utilizing aptX®,
Bluetooth technology can now offer wireless audio
quality that is indistinguishable from the highest quality wired connection.