Why is K2 better than RB-HX220B?
- Battery life40 h vs 23 h+74%
- Bluetooth version5.4 vs 5+8%
Why is RB-HX220B better than K2?
RB-HX220B has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | — | Over-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | — |
| Driver size | 40 mm | 40 mm |
| Noise control | ||
| Active noise cancelling | No | No |
| Battery & charging | ||
| Battery life | 40 h | 23 h |
| Battery capacity | — | 430 mAh |
| Charging time | 2.5 h | 2.5 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5 |
| Bluetooth codecs | — | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | — | 180 g |
| Foldable | — | Yes |
| Features | ||
| Hands-free calls | — | Yes |
