vs
5.2Noise control & calls5.4
8.0Battery4.5
8.1Build & features3.5
Why is Buds 4 better than Accentum Open?
- Battery life11 h vs 6 h+83%
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · Accentum Open: No
- Total with charging case45 h vs 28 h+61%
- Highest frequency40,000 Hz vs 15,000 Hz2.7×
- Water resistance (IPx)IPx5 vs IPx4+25%
- Lowest frequency15 Hz vs 25 Hz+67%
Why is Accentum Open better than Buds 4?
- Charging time1.2 h vs 1 h+20%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | — | Open-back |
| Driver type | — | Dynamic |
| Driver size | — | 11 mm |
| Lowest frequency | 15 Hz | 25 Hz |
| Highest frequency | 40,000 Hz | 15,000 Hz |
| Impedance | 18 Ω | — |
| Sensitivity | 38 dB | 109 dB |
| Hi-Res Audio | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | Yes | — |
| Microphones | 2 | 2 |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 11 h | 6 h |
| Battery life with ANC | 6 h | — |
| Total with charging case | 45 h | 28 h |
| Charging time | 1.2 h | 1 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.3 |
| Bluetooth codecs | LHDC, AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Low-latency game mode | Yes | — |
| Design & build | ||
| Weight | 49 g | — |
| Earbud weight (each) | — | 8.7 g |
| Protection rating | IP55 | IPX4 |
| Water resistance (IPx) | IPx5 | IPx4 |
| Dust protection (IP) | 5 | — |
| Colours | — | Cream, Black, Blush |
| Features | ||
| Touch controls | — | Yes |
| Wear detection (auto pause) | — | Yes |
| Hands-free calls | — | Yes |
