Why is Wave Flex better than KH-CRZ40T?
- Battery life8 h vs 7.5 h+7%
- Driver size12 mm vs 6 mm2×
Why is KH-CRZ40T better than Wave Flex?
- Water resistance (IPx)IPx4 vs IPx5+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver size | 12 mm | 6 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 16 Ω | — |
| Sensitivity | 105 dB | — |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Battery & charging | ||
| Battery life | 8 h | 7.5 h |
| Battery life with ANC | 8 h | — |
| Total with charging case | 32 h | — |
| Charging time | 2 h | 2 h |
| Quick charge (claimed) | 10 min → 2 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.1 |
| Bluetooth codecs | — | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| Design & build | ||
| Earbud weight (each) | — | 4.1 g |
| Protection rating | IP54 | IPX5 |
| Water resistance (IPx) | IPx4 | IPx5 |
| Dust protection (IP) | 5 | — |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | Yes |
