In depth comparison and review of JVC HA FX21BT and JBL Under Armour True Wireless Flash. 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 | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 11 g | 16 g | JVC HA FX21BT are lighter than JVC HA FX21BT headphones. |
| Colour | Black | White | Black | |
| Protection | Splashproof, sweat-resistant | Waterproof, sweat-resistant, IPX7 | |
| Design | - | Sports | |
| Recommended Use | - | Portable electronics |
| SOUND QUALITY | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 4.2 | JBL Under Armour True Wireless Flash have a more advanced version of Bluetooth than JVC HA FX21BT. |
| 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 | - | |
| Sound Output Mode | - | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 22000 Hz | JBL Under Armour True Wireless Flash offer a larger frequency range than JVC HA FX21BT. |
| Sensitivity | - | 95 dB | |
| Impedance | - | 14 Ohm | |
| Max Sound Pressure | - | 113 dB | |
| Diaphragm | 8.2 mm | 5.8 mm | JVC HA FX21BT have a thicker diaphragm than JBL Under Armour True Wireless Flash. |
| Magnet Material | Neodymium | - | |
| Features | - | TalkThru technology, JBL Charged Sound, Ambient Aware | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Sensitivity | - | -25 dBV/Pascal |
| REMOTE CONTROL | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Controls | Power on/off, volume control, 3-button remote | Power on/off, answer/end, microphone on/mute, play/pause, next/previous track, reject call, voice assistant, TalkThru button |
|---|
| CABLE | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Cable Type | USB charge cable | - |
|---|
| FEATURES | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Features | - | True wireless | |
|---|---|---|---|
| Intelligent Assistant | - | Siri, Google Now |
| BATTERY AND CHARGING | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Battery Type | Headphone battery rechargeable | 2 x headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 85 mAh | |
| Battery Life | 5 hour(s) | 5 hour(s) | Both headphones last the same amount of time on a single charge. |
| Charging Time | 2.5 hour(s) | 2 hour(s) | JBL Under Armour True Wireless Flash recharge faster than JVC HA FX21BT. |
| Included Qty | - | 2 |
| CONNECTIONS | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Connector Type | USB (power only) | - |
|---|
| OTHERS | JVC HA FX21BT | JBL Under Armour True Wireless Flash |
|---|
| Included Accessories | 2 pairs of low rebound earpieces (small, medium) | 3 pairs of ear tips (small, medium, large), micro-USB charging cable, 3 pairs of wing tips (small, medium, large), charging case (1500 mAh) | |
|---|---|---|---|
| Software Included | - | MapMyRun premium membership (12 months) | |
| Compliant Standards | - | IPX7 | |
| Service & Support | - | Limited warranty - 1 year |
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