Sennheiser HD 4.50 BTNC Owner's Manual

HD 4.50BTNC 

| 33 

Specifications

Specifications

HD 4.50BTNC

Ear coupling

closed, circumaural

Frequency response

18 - 22,000 Hz

Transducer principle

dynamic

Sensitivity (microphone)

100 - 10,000 Hz 

Sound pressure level (SPL)

113 dB (1 kHz/ 1 V

rms

)

THD (1 kHz, 100 dB)

< 0.5 %

Pick-up pattern

dual omni-directional microphones

Noise compensation

NoiseGard™ active noise cancellation

Input power

3.7 VDC, 600 mAh: built-in rechargeable 
Lithium-Polymer battery 
5 VDC, 400 mA: USB charging

Operating time

19 hours (

Bluetooth and NoiseGard on) 

25 hours (

Bluetooth only)

Charging time

approx. 2 hours

Weight

approx. 238 g

Battery

Lithium Polymer

Connectivity

Bluetooth version 4.0/NFC pairing

Audio cable  
(optional/detachable)

1.4 m audio cable, 3.5 mm angled plug, 
gold-plated

Connector

USB charging cable