Why is TE-BD21j better than RZ-S500W?
- Battery life9 h vs 6 h+50%
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · RZ-S500W: No
- aptXYes · RZ-S500W: No
- Bluetooth version5.2 vs 5+4%
Why is RZ-S500W better than TE-BD21j?
RZ-S500W 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 | 8 mm |
| Number of drivers | — | 1 |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | 32 Ω | — |
| Sensitivity | 92 dB | — |
| Adjustable equaliser | — | Yes |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 9 h | 6 h |
| Battery life with ANC | — | 6 h |
| Charging time | 2 h | 2 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5 |
| Bluetooth codecs | aptX Adaptive, aptX, AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | Yes | No |
| LDAC | No | No |
| USB-C | Yes | — |
| Smart & streaming | ||
| Voice assistant | — | Alexa, Google Assistant |
| 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 | — |
