In depth comparison and review of Jabra HALO FREE and OPPO Enco W31. 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 | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | 3.23 cm | - | |
| Width | 1.5 cm | - | |
| Depth | 2.53 cm | - | |
| Weight | 17 g | 50 g | Jabra HALO FREE are lighter than Jabra HALO FREE headphones. |
| Colour | White | Black | White | |
| Body Material | Polycarbonate, polypropylene, silicone rubber, TPE | - | |
| Protection | Dust-resistant, water-resistant | Dust-resistant, IP54, water-resistant | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | 10 m | The maximum operating distance of both headphones is the same. |
| SOUND QUALITY | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 5.0 | OPPO Enco W31 have a more advanced version of Bluetooth than Jabra HALO FREE. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | - | AAC | |
| Noise Isolating | Yes | - | Jabra HALO FREE are equipped with a noise isolating function. |
| 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 | - | |
| Sensitivity | 94 dB | 95 dB | OPPO Enco W31 have higher sensitivity than Jabra HALO FREE. |
| Impedance | 16 Ohm | - | |
| Diaphragm | 8 mm | Graphene - 7 mm | Jabra HALO FREE have a thicker diaphragm than OPPO Enco W31. |
| Simultaneously Connectable Devices Qty (Multipoint) | 2 | - | Jabra HALO FREE have the ability to connect to multiple devices simultaneously. |
| Features | Voice guidance | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Noise Cancelling | - | Yes | OPPO Enco W31 microphone can cancel out ambient noise. |
| Frequency Response | 70 - 15000 Hz | - | |
| Sensitivity | -42 dB | -38 dBV/Pascal |
| REMOTE CONTROL | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Controls | Mute, volume control, answer/end, play/pause, next/previous track, reject call | Next/previous track, voice assistant |
|---|
| CABLE | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Cable Type | USB charge cable - detachable | USB charge cable - detachable |
|---|
| FEATURES | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Intelligent Assistant | Siri, Google Now | - | |
|---|---|---|---|
| Sensors | - | Touch sensor |
| BATTERY AND CHARGING | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 25 mAh | |
| Battery Life | 5 hour(s) | 3.5 hour(s) | Jabra HALO FREE lasts longer on a single charge than the OPPO Enco W31. |
| Battery Life Details | - | Continuous playback (with included charging case): up to 15 hours Continuous playback: up to 3.5 hours |
|
| Standby Time | 336 hours | - | |
| Charging Time | 2 hour(s) | 2.5 hour(s) | Jabra HALO FREE recharge faster than Jabra HALO FREE. |
| Included Qty | - | 2 |
| WIRELESS LINK | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Transmission Range | 10 m | - |
|---|
| CONNECTIONS | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Connector Type | USB 2.0 (5 pin Micro-USB Type B) | - |
|---|
| OTHERS | Jabra HALO FREE | OPPO Enco W31 |
|---|
| Included Accessories | Earhook, 3 pairs of EarGels, 2 pairs of EarWings | Ear tips kit, USB charge cable, charging case (350 mAh) | |
|---|---|---|---|
| Compliant Standards | IC, FCC, RoHS, KCC, TELEC, REACH, IP54, SRRC, EAC, NCC | - | |
| Service & Support | Limited warranty - 1 year | - |
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