The HD 350BT also feature an impressive 30-hour battery life that can be rapidly recharged via USB-C. It features a Voice Assistant button for instant Siri and Google Assistant interaction, intuitive physical controls for every day ease of use and a robust folding design for take-anywhere durability.
|Frequency response (Microphone)||80 Hz to 6,000 Hz (-3 dB)|
|THD, total harmonic distortion||< 0.3 % (1 kHz, 100 dB)|
|Transducer principle||Dynamic, closed|
|Pick-up pattern||Dual Beamforming|
|Transducer principle (Microphone)||MEMS|
|Frequency response||18 Hz to 22,000 Hz (-10 dB)|
|Modulation scheme||GFSK, π/4 DQPSK, 8DPSK|
|Battery Specification||Built-in Lithium-Polymer rechargeable battery: 3.7 V ⎓, 300mAh|
|Charging Current||320 mA max.|
|App support||EQ and updates via Sennheiser Smart Control|
|Audio codec||SBC, AAC, AptX™, AptX™ Low Latency|
|Supported Profiles||HSP, HFP, AVRCP, A2DP|
|Charging time||Approx. 2 hours|
|Charging voltage||5 V, DC|
|Ear coupling||Around Ear|
|Operating time||30 hours music playback via Bluetooth|
|Sound pressure level (SPL)||108 dB (1 kHz/0 dBFS)|
|Transmission frequency||2,402 MHz to 2,480 MHz|
|Weight||Approx. 238 g|
These are exactly what I needed, I can't complain. The sound quality is very good - obviously for about £70 it's maybe not going to change your life it's so good, but you get exactly what you'd expect for that price and it's excellent. They feel quite well-made, whilst also being feather-weight. I don't have massive ears so I found the ear cups fine (plus they're very squishy and comfortable).
Love these headphones, comfy and keep brilliant charge too. Perfect sounds, highly recommended
Arrived very well packaged and within a week, Well made and should have 5 stars, The quality of sound is first class, the only let down is the power button which is probably the one you would use the most. It is very small and awkward to use I had to use my finger nail to switch on (there are much better micro switches available). But apart from this, These are great headphones and well worth the money I would have given 4.5 stars but that isn't an option.
Excellent value - very good battery life - super sound - comfortable on the ears - app easy to install & navigate - prompt delivery