Sennheiser HD 4.50 BTNC headset-Fantastic wireless sound quality

The 4.50BTNC Wireless HD technology offers almost everything music fans with active lifestyles might want: Bluetooth 4.0 technology, intuitive ease of use, exceptional ease of use and incredibly powerful sound. This elegantly minimalist earphone headset also offers the active noise cancellation of Sennheiser NoiseGard that lets you listen to music, movies or phone calls in peace.

Enjoy up to 19 hours of battery life thanks to active NoiseGard noise cancellation and up to 25 hours of battery life with NoiseGard deactivated. Passive and unbalanced listening mode is also possible via a removable cable provided when the headset is not turned on.

The active NoiseGard noise cancellation virtually eliminates unwanted ambient sound. Whether in the air, on the train or in a noisy street, NoiseGard offers a comfortable listening experience that allows you to relax and concentrate on music, not on noise.

Sennheiser HD 4.50BTNC Wireless Specs:

Wearing Style – Around Ear
Transducer Principle – Dynamic, Closed
Connectivity – Bluetooth 4.0 / NFC Pairing
Frequency Response – 18 – 22,000 Hz
Impedance – 18 Ω
Sound Pressure Level (SPL) – 113 dB (Passive: 1 kHz /1 Vrms)
Total Harmonic Distortion (THD) – <0.5% (1 kHz / 100 dB)
Battery Life (Lithium Polymer) – Up to 25 Hours
Weight (headphones) – 8.4 oz. (238 g)