In depth comparison and review of JBL Under Armour Sport Wireless REACT and Jaybird X4. 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 | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Product Type | Earphones - Bluetooth - wireless | Earphones - Bluetooth - wireless | |
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Height | - | 24.2 cm | |
Width | - | 54.5 cm | |
Depth | - | 1.3 cm | |
Weight | 16.5 g | 14.7 g | Jaybird X4 are lighter than JBL Under Armour Sport Wireless REACT headphones. |
Dimensions & Weight Details | - | Earphone: 54.5 cm x 1.3 cm x 24.2 cm / 14.7 g Control unit: 4.25 cm x 1.16 cm x 0.53 cm Cradle: 9.8 cm x 1.81 cm x 0.96 cm / 5.5 g |
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Colour | Black | Jade, alfa metallic | Flash, black metallic | Glacier, storm metallic | |
Body Material | Aluminium | - | |
Earpad Material | Silicone | - | |
Protection | Waterproof, sweat-resistant, IPX7 | Waterproof, sweat-resistant, IPX7 | |
Design | Sports | Sports | |
Recommended Use | Portable electronics | Portable electronics | |
Bluetooth Range (Operating Distance) | - | 10 m |
SOUND QUALITY | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Headphones Form Factor | In-ear | In-ear | |
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Connectivity Technology | Wireless | Wireless | |
Wireless Technology | Bluetooth | Bluetooth | |
Bluetooth Version | Bluetooth 4.2 | Bluetooth 4.1 | JBL Under Armour Sport Wireless REACT have a more advanced version of Bluetooth than Jaybird X4. |
Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Serial Port Profile (SPP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
Bluetooth Audio Codec | - | SBC, AAC | |
Sound Output Mode | Stereo | Stereo | |
Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
Max Input Power | - | 10 mW | |
Total Harmonic Distortion (THD) | - | <5% | |
Sensitivity | 102 dB | 99 dB | JBL Under Armour Sport Wireless REACT have higher sensitivity than Jaybird X4. |
Impedance | 14 Ohm | 16 Ohm | |
Max Sound Pressure | 96 dB | - | |
Diaphragm | 5.8 mm | 6 mm | Jaybird X4 have a thicker diaphragm than JBL Under Armour Sport Wireless REACT. |
Features | Magnetic ear buds, TalkThru technology, JBL Charged Sound, Ambient Aware | - | |
In-Cord Volume Control | - | Yes |
MICROPHONE | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Type | On-cable | - | |
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Microphone Operation Mode | - | Omni-directional | |
Audio Input Details | - | Omni-directional | |
Sensitivity | -20 dBV/Pascal | -38 dB | |
Max Sound Pressure | - | 94 dB |
REMOTE CONTROL | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Controls | Volume, power on/off, answer/end, play/pause, next/previous track, reject call, voice assistant, TalkThru button | Volume control, answer/end, play/pause, next/previous track |
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CABLE | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Cable Length | 51 cm | - |
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FEATURES | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Intelligent Assistant | Siri, Google Now | - |
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BATTERY AND CHARGING | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Battery Type | Headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
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Battery Capacity | 170 mAh | - | |
Battery Life | 9 hour(s) | 8 hour(s) | JBL Under Armour Sport Wireless REACT lasts longer on a single charge than the Jaybird X4. |
Charging Time | 2 hour(s) | 2 hour(s) | The charging of both headphones last the same time. |
OTHERS | JBL Under Armour Sport Wireless REACT | Jaybird X4 |
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Included Accessories | Carrying pouch, 3 pairs of ear tips (small, medium, large), micro-USB charging cable, 3 sizes of enhancers | Carrying pouch, clothing clip, charging cradle, 3 sizes secure-fit ear fins, Comply ultra ear tips (M/L), oval silicone ear tips (S/L), speed cinch | |
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Software Included | MapMyRun premium membership (12 months) | - | |
Compliant Standards | IPX7 | - | |
Service & Support | Limited warranty - 1 year | Limited warranty - 1 year |