vs
6.4Battery4.3
Why is TE-BD21j better than LIVE FREE NC+ TWS?
- Battery life9 h vs 7 h+29%
- Driver size8 mm vs 6.8 mm+18%
Why is LIVE FREE NC+ TWS better than TE-BD21j?
LIVE FREE NC+ TWS has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Hybrid | Dynamic |
| Driver size | 8 mm | 6.8 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | 32 Ω | 16 Ω |
| Sensitivity | 92 dB | 96 dB |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Transparency / ambient mode | Yes | Yes |
| Battery & charging | ||
| Battery life | 9 h | 7 h |
| Battery life with ANC | — | 6 h |
| Battery capacity | — | 50 mAh |
| Charging time | 2 h | 2 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.1 |
| Bluetooth codecs | aptX Adaptive, aptX, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | Yes | — |
| LDAC | No | — |
| USB-C | Yes | — |
| Design & build | ||
| Earbud weight (each) | 5.2 g | — |
| Protection rating | IPX4 | — |
| Water resistance (IPx) | IPx4 | IPx4 |
| Features | ||
| Hands-free calls | Yes | — |
