Side by side comparison and review of Sennheiser CX 350BT and JBL Free II. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sennheiser CX 350BT | JBL Free II |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 13 g | 4.8 g | JBL Free II are lighter than Sennheiser CX 350BT headphones. |
| Dimensions & Weight Details | - | Earphone: 4.8 g Charging case: 52 g |
|
| Colour | Black | White | Black | White | |
| Protection | - | Splashproof, IPX4 | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Sennheiser CX 350BT | JBL Free II |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 | Both headphones have the same Bluetooth version. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), 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, apt-X LL | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | - | 100 dB | |
| Impedance | - | 16 Ohm | |
| Max Sound Pressure | 110 dB | 95 dB | |
| Diaphragm | - | 5.6 mm |
| MICROPHONE | Sennheiser CX 350BT | JBL Free II |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | Mono | - | |
| Audio Input Details | Omni-directional | - | |
| Sensitivity | - | -38 dBV/Pascal |
| REMOTE CONTROL | Sennheiser CX 350BT | JBL Free II |
|---|
| Controls | Answer/end, play/pause, next/previous track | - |
|---|
| CABLE | Sennheiser CX 350BT | JBL Free II |
|---|
| Cable Type | - | USB-C charge cable |
|---|
| FEATURES | Sennheiser CX 350BT | JBL Free II |
|---|
| Features | - | Touch control |
|---|
| BATTERY AND CHARGING | Sennheiser CX 350BT | JBL Free II |
|---|
| Battery Type | - | 2 x headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 55 mAh | |
| Battery Life | 10 hour(s) | 6 hour(s) | Sennheiser CX 350BT lasts longer on a single charge than the JBL Free II. |
| Battery Life Details | Continuous playback: up to 10 hours Standby: up to 340 hours |
(with included charging case): up to 24 hours | |
| Charging Time | - | 2 hour(s) | |
| Included Qty | - | 2 |
| OTHERS | Sennheiser CX 350BT | JBL Free II |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large) | 3 pairs of ear tips (small, medium, large), charging case (650 mAh) | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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