vs
5.3Noise control & calls5.7
5.7Battery9.3
4.3Build & features4.1
Why is Freebuds 7i better than Tune 255NC?
- Highest frequency40,000 Hz vs 20,000 Hz2×
- Charging time1 h vs 2 h2×
- Driver size11 mm vs 10 mm+10%
Why is Tune 255NC better than Freebuds 7i?
- Battery life8 h vs 12 h+50%
- Battery life with ANC5 h vs 12 h2.4×
- Total with charging case35 h vs 48 h+37%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Driver type | Dynamic | — |
| Driver size | 11 mm | 10 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 40,000 Hz | 20,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | 90 dB | 100 dB |
| Spatial / 3D audio | Yes | — |
| Head tracking | Yes | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | 3 | — |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 8 h | 12 h |
| Battery life with ANC | 5 h | 12 h |
| Total with charging case | 35 h | 48 h |
| Battery capacity | — | 65 mAh |
| Charging time | 1 h | 2 h |
| Quick charge (claimed) | 10 min → 4 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | LDAC, AAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | No | — |
| LDAC | Yes | — |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 52 g |
| Earbud weight (each) | 5.4 g | — |
| Protection rating | IP54 | IP54 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | 5 |
| Colours | — | Black |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
