vs
6.4Battery4.6
Why is TE-BD21j better than Quantum TWS?
- Battery life9 h vs 8 h+12%
Why is Quantum TWS better than TE-BD21j?
- Driver size8 mm vs 10 mm+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Hybrid | Dynamic |
| Driver size | 8 mm | 10 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | 32 Ω | 16 Ω |
| Sensitivity | 92 dB | 106 dB |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 9 h | 8 h |
| Battery life with ANC | — | 5 h |
| Charging time | 2 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.2 |
| Bluetooth codecs | aptX Adaptive, aptX, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | Yes | — |
| LDAC | No | — |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Voice assistant | — | Alexa, Google Assistant |
| Design & build | ||
| Earbud weight (each) | 5.2 g | — |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Colours | — | Black |
| Features | ||
| Hands-free calls | Yes | Yes |
