In depth comparison and review of harman/kardon FLY TWS and Sennheiser CX 400BT. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Dimensions & Weight Details | Earbud: 7.3 g Charging case: 59.2 g |
Earbud: 6 g Charging case: 37 g |
|
| Colour | Black | White | Black | |
| Protection | Waterproof, IPX5 | - | |
| Recommended Use | - | Portable electronics |
| SOUND QUALITY | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.1 | Sennheiser CX 400BT have a more advanced version of Bluetooth than harman/kardon FLY TWS. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC, AAC, aptX | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 10 - 20000 Hz | 5 - 21000 Hz | Sennheiser CX 400BT offer a larger frequency range than harman/kardon FLY TWS. |
| Total Harmonic Distortion (THD) | - | 0.08% | |
| Sensitivity | 97 dB | - | |
| Impedance | 17 Ohm | - | |
| Max Sound Pressure | - | 107 dB | |
| Diaphragm | 5.6 mm | 7 mm | Sennheiser CX 400BT have a thicker diaphragm than harman/kardon FLY TWS. |
| Features | TalkThru technology | - |
| MICROPHONE | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Form Factor | Built-in | Built-in |
|---|
| REMOTE CONTROL | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Controls | - | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset |
|---|
| CABLE | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Cable Type | - | USB-C to USB-A cable - detachable - straight - 25 cm |
|---|
| FEATURES | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Features | - | Voice alerts, touch control | |
|---|---|---|---|
| Intelligent Assistant | Google Assistant, Alexa | Siri, Google Assistant |
| BATTERY AND CHARGING | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Battery Type | Lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 55 mAh | Both headphones are designed with the same battery capacity. |
| Battery Life | 6 hour(s) | 7 hour(s) | Sennheiser CX 400BT lasts longer on a single charge than the harman/kardon FLY TWS. |
| Battery Life Details | - | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
|
| Charging Time | 2 hour(s) | 1.5 hour(s) | Sennheiser CX 400BT recharge faster than harman/kardon FLY TWS. |
| Included Qty | - | 2 |
| WIRELESS LINK | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Radio Transmitter Power | - | 10 mW |
|---|
| OTHERS | harman/kardon FLY TWS | Sennheiser CX 400BT |
|---|
| Included Accessories | Charging case (450 mAh) | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | |
|---|---|---|---|
| Compliant Standards | - | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | |
| Service & Support | Limited warranty - 1 year | - |
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