vs
4.8Noise control & calls5.7
8.8Battery9.3
8.9Build & features4.1
Why is OpenJump better than Tune 255NC?
- Water resistance (IPx)IPx7 vs IPx4+75%
- Charging time1 h vs 2 h2×
- Driver size14.2 mm vs 10 mm+42%
Why is Tune 255NC better than OpenJump?
- Active noise cancellingNo · OpenJump: Yes
- Battery life11 h vs 12 h+9%
- Total with charging case42 h vs 48 h+14%
- Battery capacity60 mAh vs 65 mAh+8%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | — |
| Driver size | 14.2 mm | 10 mm |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 20,000 Hz |
| Impedance | — | 16 Ω |
| Sensitivity | — | 100 dB |
| Spatial / 3D audio | Yes | — |
| Head tracking | Yes | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | Yes | Yes |
| Microphones | 4 | — |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 11 h | 12 h |
| Battery life with ANC | — | 12 h |
| Total with charging case | 42 h | 48 h |
| Battery capacity | 60 mAh | 65 mAh |
| Charging time | 1 h | 2 h |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | LDAC, SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | — |
| aptX | No | — |
| LDAC | Yes | — |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Companion app | Yes | Yes |
| Design & build | ||
| Weight | — | 52 g |
| Earbud weight (each) | 7.8 g | — |
| Protection rating | IPX7 | IP54 |
| Water resistance (IPx) | IPx7 | IPx4 |
| Dust protection (IP) | — | 5 |
| Colours | Black | Black |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | — |
