Why is Air S better than KH-CRZ40T?
- Charging time1 h vs 2 h2×
- aptXYes · KH-CRZ40T: No
- Driver size10 mm vs 6 mm+67%
Why is KH-CRZ40T better than Air S?
- Battery life6 h vs 7.5 h+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver size | 10 mm | 6 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 6 h | 7.5 h |
| Total with charging case | 30 h | — |
| Battery capacity | 40 mAh | — |
| Charging time | 1 h | 2 h |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.1 |
| Bluetooth codecs | aptX, SBC | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | Yes | No |
| LDAC | No | No |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | — |
| Latency | 100 ms | — |
| Low-latency game mode | Yes | — |
| Design & build | ||
| Earbud weight (each) | — | 4.1 g |
| Protection rating | IPX5 | IPX5 |
| Water resistance (IPx) | IPx5 | IPx5 |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | — | Yes |
