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Sennheiser HD 4.40 BT Wireless

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Acoustic design Closed  
Buttons Answer button, Next song, Play/Pause, Previous song, Volume  
Driver technology Dynamic  
Earpiece design Over ear  
Type Stereo 2.0  


Wired (Headphone> Audio source) Yes  
Type of connector USB, 3.5mm  
Wireless Yes  
Wireless connection Bluetooth  
Bluetooth codec AAC, aptX  
Bluetooth profile A2DP, AVRCP, HFP, HSP  
Bluetooth version 4.0  
Battery life (in use)  25 h  


Attachment type Headband  
Available colours Black, Silver  
Headset No  


Driver size  32 mm  
Product weight  225 g  


Features Charging via USB, Detachable cable, Folding, Interchangeable ear cushions, Supports NFC  
IP code (level of dust/water resistance)  

Audio features

Frequency range (max)  22,000 Hz  
Frequency range (min.)  18 Hz  
Impedance  18 Ω  
Microphone Yes  
Power handling capacity  
Sensitivity  113 dB/mW  


Release year 2017  


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