Sennheiser HD 4.40-BT Bluetooth Headphones (Black)



Sennheiser’s HD 4.40BT Wireless headset offers great sound quality for every day listening on the move. Long-lasting battery life and a robust, foldable design, the closed back around ear headset is the perfect companion for your mobile devices – providing you with unrivalled listening pleasure and easy communication.
Impedance: 18 Ω

Frequency response (Microphone): 100 – 10,000 Hz

Frequency response: 18 – 22,000 Hz

Sound pressure level (SPL): 113dB (Passive: 1kHz/1Vrms)

THD, total harmonic distortion: <0.5% (1kHz/100dB)

Pick-up pattern: Dual omnidirectional microphones

Battery Specification: Li-ion Polymer Battery



Technical Details
Brand Sennheiser
Model HD 4.40 BT
Model Year 2017
Item Weight 222 g
Product Dimensions 18 x 10 x 26 cm
Batteries: 1 CR2 batteries required.
Item model number HD 4.40 BT
Additional Features Wireless, Microphone-Feature
Included Components Headphones, Carry Pouch, Charging Cable, Connecting Cable, Quick Start Guide
Number Of Items 1
Colour Screen No
Microphone Form Factor With Microphone
Speaker Connectivity Wireless
Headphones Form Factor With Microphone^Volume control
Batteries Included No
Batteries Required No
Battery Cell Composition Lithium Ion
Wireless Type Bluetooth
Connector Type Bluetooth Wireless
Device interface – primary Buttons, Microphone
Contains Liquid Contents No
Includes Rechargable Battery Yes
Includes AC Adapter No
Includes Remote No
Supports Bluetooth Technology Yes


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