vs
6.5Battery6.8
Why is TE-BD21j better than Sleepbuds II?
- Charging time2 h vs 6 h3×
- Bluetooth version5.2 vs 5+4%
Why is Sleepbuds II better than TE-BD21j?
- Battery life9 h vs 10 h+11%
- Earbud weight (each)5.2 g vs 2.3 g2.3×
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Hybrid | Dynamic |
| Driver size | 8 mm | — |
| Impedance | 32 Ω | — |
| Sensitivity | 92 dB | — |
| Noise control | ||
| Active noise cancelling | — | No |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 9 h | 10 h |
| Charging time | 2 h | 6 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5 |
| 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 | 2.3 g |
| Protection rating | IPX4 | — |
| Water resistance (IPx) | IPx4 | — |
| Colours | — | White |
| Features | ||
| Hands-free calls | Yes | — |
