Why is RZ-S50W better than ETT?
- Battery life7.5 h vs 6 h+25%
Why is ETT better than RZ-S50W?
- Water resistance (IPx)IPx4 vs IPx5+25%
- Earbud weight (each)7 g vs 5 g+40%
- Charging time2 h vs 1.5 h+33%
- Driver size8 mm vs 10 mm+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | Dynamic |
| Driver size | 8 mm | 10 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | — | 32 Ω |
| Sensitivity | — | 98 dB |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | Yes | Yes |
| Battery & charging | ||
| Battery life | 7.5 h | 6 h |
| Battery life with ANC | 6.5 h | — |
| Charging time | 2 h | 1.5 h |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5 | 5 |
| Bluetooth codecs | AAC, SBC | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| USB-C | Yes | Yes |
| Design & build | ||
| Earbud weight (each) | 7 g | 5 g |
| Protection rating | IPX4 | IPX5 |
| Water resistance (IPx) | IPx4 | IPx5 |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
