In depth comparison and review of Sennheiser CX True Wireless and JBL TUNE Flex. 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 | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Dimensions & Weight Details | Earbud: 6 g Charging case: 5.9 cm x 4.23 cm x 3.38 cm / 37 g |
Charging case: 5.15 cm x 2.93 cm x 4.7 cm / 38.6 g Earbud: 2.05 cm x 2.02 cm x 3.49 cm / 4.8 g |
|
| Colour | Black | White | Blue | White | Black | Purple | |
| Protection | Splashproof, IPX4 | - | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Headphones Form Factor | In-ear | Ear-bud | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.2 | Bluetooth 5.2 | Both headphones have the same Bluetooth version. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | SBC, AAC, aptX | - | |
| Active Noise Cancelling | - | Yes | JBL TUNE Flex are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Smart Ambient | |
| Noise Isolating | Yes | - | Sennheiser CX True Wireless are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | Bass Boost | Pure Bass | |
| Frequency Response | 5 - 21000 Hz | 20 - 20000 Hz | Sennheiser CX True Wireless offer a larger frequency range than JBL TUNE Flex. |
| Total Harmonic Distortion (THD) | <0.08% | - | |
| Sensitivity | 110 dB | 110 dB | Both headphones offer the same sensitivity. |
| Impedance | 16 Ohm | 32 Ohm | |
| Max Sound Pressure | 110 dB | - | |
| Diaphragm | 7 mm | 12 mm | JBL TUNE Flex have a thicker diaphragm than Sennheiser CX True Wireless. |
| Simultaneously Connectable Devices Qty (Multipoint) | 1 | - | |
| Features | TrueResponse technology | - |
| MICROPHONE | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - | |
| Sensitivity | - | -38 dBV/Pascal | |
| Microphones Included | 4 | - |
| CABLE | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Cable Type | USB-C charge cable - detachable - 25 cm | USB-C charge cable |
|---|
| FEATURES | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Features | Touch control | - | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | Yes | - | |
| Voice Control | Indirect | - | |
| Intelligent Assistant | Siri, Google Assistant | - |
| BATTERY AND CHARGING | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | 2 x headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | 60 mAh | 55 mAh | Sennheiser CX True Wireless have a higher battery capacity than JBL TUNE Flex. |
| Battery Life | 9 hour(s) | 4.5 hours | Sennheiser CX True Wireless lasts longer on a single charge than the JBL TUNE Flex. |
| Battery Life Details | Continuous playback (50% volume): up to 9 hours Continuous playback (with included charging case): up to 27 hours |
Continuous playback: up to 32 hours Continuous playback: up to 4.5 hours Continuous playback (ANC OFF / Bluetooth): up to 8 hours Continuous playback (ANC ON / Bluetooth): up to 6 hours Continuous playback (with included charging case): up to 18 hours |
|
| Charging Time | 1.5 hour(s) | 2 hour(s) | Sennheiser CX True Wireless recharge faster than Sennheiser CX True Wireless. |
| Included Qty | 2 | 2 |
| OTHERS | Sennheiser CX True Wireless | JBL TUNE Flex |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (400 mAh) | USB-C charging cable, 3 sizes of earhooks, charging case (570 mAh) | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1 | IPX4, GFSK, π/4 QPSK, 8DPSK |
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