vs
9.3Noise control & calls4.8
2.5Battery7.1
Why is FreeBuds 4 better than Endurance Race TWS?
- Active noise cancellingYes · Endurance Race TWS: No
- Driver size14.3 mm vs 6 mm2.4×
- Highest frequency40,000 Hz vs 20,000 Hz2×
Why is Endurance Race TWS better than FreeBuds 4?
- Battery life4 h vs 10 h2.5×
- Water resistance (IPx)IPx4 vs IPx7+75%
Specifications
Side by side
| Sound | ||
| Fit | Semi-in-ear (open) | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | — |
| Driver size | 14.3 mm | 6 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 20,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | — | 99 dB |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 4 h | 10 h |
| Battery life with ANC | 2.5 h | — |
| Total with charging case | — | 30 h |
| Charging time | 1 h | — |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.2 |
| Bluetooth codecs | AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | — |
| Design & build | ||
| Earbud weight (each) | 4.1 g | — |
| Protection rating | IPX4 | IP67 |
| Water resistance (IPx) | IPx4 | IPx7 |
| Dust protection (IP) | — | 6 |
| Colours | — | Black |
| Features | ||
| Hands-free calls | Yes | — |
