vs
4.0Noise control & calls7.9
5.0Battery6.1
Why is Grom Wireless better than Q21i?
- Bluetooth version5.2 vs 5+4%
Why is Q21i better than Grom Wireless?
- Active noise cancellingNo · Grom Wireless: Yes
- Battery life45 h vs 60 h+33%
- Driver size30 mm vs 40 mm+33%
Specifications
Side by side
| Sound | ||
| Fit | On-ear | Over-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 30 mm | 40 mm |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 32 Ω | 16 Ω |
| Sensitivity | 113 dB | — |
| Hi-Res Audio | — | Yes |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 45 h | 60 h |
| Battery life with ANC | — | 40 h |
| Battery capacity | — | 185 mAh |
| Charging time | 4 h | — |
| Quick charge (claimed) | 10 min → 4 h | 5 min → 4 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5 |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | Yes |
| Smart & streaming | ||
| Voice assistant | Google Assistant, Siri | — |
| Companion app | — | Yes |
| Design & build | ||
| Colours | Black | Black |
| Features | ||
| Hands-free calls | Yes | — |
