vs
6.4Battery4.9
Why is TE-BD21j better than Studio Buds?
- Battery life9 h vs 8 h+12%
Why is Studio Buds better than TE-BD21j?
Studio Buds has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Driver type | Hybrid | — |
| Driver size | 8 mm | — |
| Number of drivers | — | 1 |
| Impedance | 32 Ω | — |
| Sensitivity | 92 dB | — |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 9 h | 8 h |
| Total with charging case | — | 24 h |
| Charging time | 2 h | — |
| Quick charge (claimed) | — | 5 min → 1 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | — |
| Bluetooth codecs | aptX Adaptive, aptX, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | Yes | — |
| LDAC | No | — |
| USB-C | Yes | — |
| Smart & streaming | ||
| Voice assistant | — | Siri |
| Companion app | — | Yes |
| Design & build | ||
| Earbud weight (each) | 5.2 g | — |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | — |
