Why is AH-C630W better than KH-CRZ20T?
AH-C630W has no measurable advantages in this pair.
Why is KH-CRZ20T better than AH-C630W?
- Battery life4.5 h vs 7.5 h+67%
- Earbud weight (each)4.7 g vs 4.1 g+15%
- Driver size10 mm vs 11 mm+10%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Semi-in-ear (open) |
| Ear cup design | — | Open-back |
| Driver type | Dynamic | — |
| Driver size | 10 mm | 11 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Battery & charging | ||
| Battery life | 4.5 h | 7.5 h |
| Charging time | 2 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5.1 |
| Bluetooth codecs | AAC, SBC | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| USB-C | Yes | — |
| Design & build | ||
| Earbud weight (each) | 4.7 g | 4.1 g |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | Yes |
