Why is Free 2S better than KHB 35?
Free 2S has no measurable advantages in this pair.
Why is KHB 35 better than Free 2S?
- Battery life7 h vs 8 h+14%
- Battery capacity40 mAh vs 110 mAh2.8×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Spatial / 3D audio | Yes | — |
| Noise control | ||
| Active noise cancelling | — | No |
| Microphones | 4 | — |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 7 h | 8 h |
| Total with charging case | 30 h | — |
| Battery capacity | 40 mAh | 110 mAh |
| Charging time | 1.5 h | — |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.2 |
| Bluetooth codecs | SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| USB-C | Yes | — |
| Latency | 60 ms | — |
| Low-latency game mode | Yes | Yes |
| Design & build | ||
| Protection rating | IPX7 | — |
| Water resistance (IPx) | IPx7 | — |
| Colours | — | Black |
| Features | ||
| Hands-free calls | — | Yes |
