In depth comparison and review of JBL Under Armour Sport Wireless Train and JVC HA S31M. 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 Train | JVC HA S31M |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | 240 g | 140 g | JVC HA S31M are lighter than JBL Under Armour Sport Wireless Train headphones. |
| Colour | Black / red | Black | - | |
| Protection | Moisture-resistant, sweat-resistant, IPX4 | - | |
| Design | Sports | - | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Foldable | Yes | - | JBL Under Armour Sport Wireless Train can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.1 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 16 - 20000 Hz | 10 - 26000 Hz | JVC HA S31M offer a larger frequency range than JBL Under Armour Sport Wireless Train. |
| Max Input Power | 20 mW | - | |
| Sensitivity | 101 dB | - | |
| Impedance | 32 Ohm | 32 Ohm | |
| Diaphragm | 40 mm | - | |
| Magnet Material | - | Neodymium | |
| Features | TalkThru technology, JBL Charged Sound, Ambient Aware | - | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Form Factor | Built-in | - |
|---|
| REMOTE CONTROL | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Controls | Volume, power on/off, answer/end, play/pause, next/previous track, reject call, voice assistant, TalkThru button | 4-button remote |
|---|
| CABLE | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Cable Type | Audio cable - detachable - 1.25 m | Headphones cable - single-sided - L shaped - 1.2 m | |
|---|---|---|---|
| Cable Length | - | 1.2 m | |
| Plated Connector | - | Gold |
| FEATURES | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Intelligent Assistant | Siri, Google Now | - |
|---|
| BATTERY AND CHARGING | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | - | |
|---|---|---|---|
| Battery Capacity | 610 mAh | - | |
| Battery Life | 16 hour(s) | - | |
| Charging Time | 2 hour(s) | - |
| WIRELESS LINK | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Modulation Type | GFSK, 8-DPSK, DQPSK | - | |
|---|---|---|---|
| Radio Frequency Range | 2.402 - 2.480GHz | - |
| CONNECTIONS | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | JBL Under Armour Sport Wireless Train | JVC HA S31M |
|---|
| Included Accessories | Carrying case, micro-USB charging cable | - | |
|---|---|---|---|
| Compatibility | - | iPhone | |
| Compliant Standards | IPX4 | - | |
| Service & Support | Limited warranty - 1 year | - |
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