4.8Battery5.2
Why is Free 2S better than Go Air Sport?
- Water resistance (IPx)IPx7 vs IPx5+40%
- Charging time1.5 h vs 2.2 h+47%
Why is Go Air Sport better than Free 2S?
- Battery life7 h vs 8 h+14%
- Total with charging case30 h vs 32 h+7%
- Battery capacity40 mAh vs 43 mAh+7%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Driver type | — | Dynamic |
| Driver size | — | 6 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | — | 103 dB |
| Spatial / 3D audio | Yes | — |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | — | No |
| Microphones | 4 | — |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 7 h | 8 h |
| Total with charging case | 30 h | 32 h |
| Battery capacity | 40 mAh | 43 mAh |
| Charging time | 1.5 h | 2.2 h |
| Quick charge (claimed) | — | 10 min → 1 h |
| Fast charging support | — | Yes |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.1 |
| Bluetooth codecs | SBC | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| USB-C | Yes | — |
| Latency | 60 ms | — |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 58 g |
| Earbud weight (each) | — | 6.2 g |
| Protection rating | IPX7 | IP55 |
| Water resistance (IPx) | IPx7 | IPx5 |
| Dust protection (IP) | — | 5 |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
