Detailed comparison and review of JBL Free II and JBL Under Armour Project Rock True Wireless X. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 4.8 g | - | |
| Dimensions & Weight Details | Earphone: 4.8 g Charging case: 52 g |
- | |
| Colour | Black | White | Black | |
| Protection | Splashproof, IPX4 | Waterproof, sweat-resistant, IPX7 | |
| Design | - | Sports | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 | 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) | |
| Noise Isolating | - | Yes | JBL Under Armour Project Rock True Wireless X are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 22000 Hz | JBL Under Armour Project Rock True Wireless X offer a larger frequency range than JBL Free II. |
| Sensitivity | 100 dB | 96 dB/mW | JBL Free II have higher sensitivity than JBL Under Armour Project Rock True Wireless X. |
| Impedance | 16 Ohm | 14 Ohm | |
| Max Sound Pressure | 95 dB | 96 dB | |
| Diaphragm | 5.6 mm | 5.8 mm | JBL Under Armour Project Rock True Wireless X have a thicker diaphragm than JBL Free II. |
| Features | - | TalkThru technology, JBL Charged Sound, Ambient Aware |
| MICROPHONE | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Sensitivity | -38 dBV/Pascal | -25 dBV/Pascal |
| CABLE | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Cable Type | USB-C charge cable | USB-C charge cable - detachable |
|---|
| FEATURES | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Features | Touch control | - |
|---|
| BATTERY AND CHARGING | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Battery Type | 2 x headphone battery rechargeable - Lithium Ion | 2 x headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 120 mAh | JBL Under Armour Project Rock True Wireless X have a higher battery capacity than JBL Free II. |
| Battery Life | 6 hour(s) | 10 hour(s) | JBL Under Armour Project Rock True Wireless X lasts longer on a single charge than the JBL Free II. |
| Battery Life Details | (with included charging case): up to 24 hours | Continuous talk: up to 10 hours Continuous playback: up to 10 hours Continuous playback (with included charging case): up to 50 hours |
|
| Charging Time | 2 hour(s) | 2 hour(s) | The charging of both headphones last the same time. |
| Included Qty | 2 | 2 |
| OTHERS | JBL Free II | JBL Under Armour Project Rock True Wireless X |
|---|
| Included Accessories | 3 pairs of ear tips (small, medium, large), charging case (650 mAh) | Carrying case, 3 pairs of ear tips, 3 pairs of EarFins, sticker, USB-C charging cable, charging case (1500 mAh) | |
|---|---|---|---|
| Software Included | - | MapMyRun premium membership (12 months) | |
| Compliant Standards | - | IPX7 |
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