Impedance
18 Ohms
Frequency
22000 Hz
Weight
221.1 g
Sennheiser HD 4.40 BT features 600 mAh battery.
Design
| Fit i | Over-ear (482 others) |
| Weight i | 221.1 g (1 other) |
| Has a detachable cable i | ✔ (468 others) |
| Water resistance i | None (332 others) |
| Can be folded i | ✔ (370 others) |
| Has a tangle free cable i | ✖ |
| Travel bag is included i | ✔ (353 others) |
Sound quality
| Has active noise cancellation (anc) i | ✖ |
| Lowest frequency i | 18 Hz (12 others) |
| Highest frequency i | 22000 Hz (62 others) |
| Driver Unit Size i | 32 mm (17 others) |
| Impedance i | 18 Ohms (10 others) |
| Sound pressure level i | 113 dB/mW (7 others) |
| Has a neodymium magnet i | ✔ (233 others) |
| Has passive noise reduction i | ✔ (420 others) |
Power
| Battery Life i | 25 hours (19 others) |
| Charge time i | 2 hours (112 others) |
| Has a battery level indicator i | ✔ (376 others) |
| Battery Power i | 600 mAh (22 others) |
| Has a rechargeable battery i | ✔ (405 others) |
| Has a removable battery i | ✖ |
Connectivity
| Connectivity i | Wireless (226 others) |
| Bluetooth Version i | 4 (23 others) |
| Has aptx i | ✔ (100 others) |
Miscellaneous
| Has a 3.5mm male connector i | ✔ |
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Frequently Asked Questions
What is the impedance of the Sennheiser HD 4.40 BT?
At 18 Ohms, the Sennheiser HD 4.40 BT is 68% below the category average for impedance, ranking #388 out of 453 — see ranking headphone products.
What is the battery life of the Sennheiser HD 4.40 BT?
At 25 hours, the Sennheiser HD 4.40 BT is 46% below the category average for battery life, ranking #275 out of 394 — see ranking headphone products.
How long does the Sennheiser HD 4.40 BT take to charge?
At 2 hours, the Sennheiser HD 4.40 BT is 26% below the category average for charge time, ranking #32 out of 307 — see ranking headphone products.
What is the highest frequency of the Sennheiser HD 4.40 BT?
At 22000 Hz, the Sennheiser HD 4.40 BT is 23% below the category average for highest frequency, ranking #226 out of 561 — see ranking headphone products.
What is the driver unit size of the Sennheiser HD 4.40 BT?
At 32 mm, the Sennheiser HD 4.40 BT is 22% below the category average for driver unit size, ranking #448 out of 509 — see ranking headphone products.
How big is the Sennheiser HD 4.40 BT battery?
At 600 mAh, the Sennheiser HD 4.40 BT is 18% below the category average for battery capacity, ranking #128 out of 214 — see ranking headphone products.
What is the lowest frequency of the Sennheiser HD 4.40 BT?
At 18 Hz, the Sennheiser HD 4.40 BT is 18% above the category average for lowest frequency, ranking #300 out of 559 — see ranking headphone products.
Is the Sennheiser HD 4.40 BT lightweight?
Yes. At 221.1 g, the Sennheiser HD 4.40 BT is 11% below the category average for weight, ranking #181 out of 545 — see ranking headphone products.
How does it compare?
How does the Sennheiser HD 4.40 BT's weight compare to similar headphoness?
At 221.1 g, the Sennheiser HD 4.40 BT trails the Meizu Live (27 g) by 88%.
How does the Sennheiser HD 4.40 BT's highest frequency compare to similar headphoness?
At 22000 Hz, the Sennheiser HD 4.40 BT trails the Meizu Live (40000 Hz) by 45%.
How does the Sennheiser HD 4.40 BT's battery life compare to similar headphoness?
At 25 hours, the Sennheiser HD 4.40 BT trails the Sennheiser HD 450BT (30 hours) by 17%.
How does the Sennheiser HD 4.40 BT's sound pressure level compare to similar headphoness?
At 113 dB/mW, the Sennheiser HD 4.40 BT leads the Meizu Live (97 dB/mW) by 14%.
How does the Sennheiser HD 4.40 BT's lowest frequency compare to similar headphoness?
At 18 Hz, the Sennheiser HD 4.40 BT leads the Sennheiser Momentum Over-Ear 2.0 (16 Hz) by 11%.