vs
2.4Battery6.0
6.7Build & features7.0
Why is HP-C28BTF better than AeroFit 2 AI?
- Earbud weight (each)3 g vs 10 g3.3×
- Driver size6.1 mm vs 5.5 mm+11%
Why is AeroFit 2 AI better than HP-C28BTF?
- Battery life3.5 h vs 8 h2.3×
- Hi-res codec (LDAC / aptX HD / LHDC)No · HP-C28BTF: Yes
- Water resistance (IPx)IPx4 vs IPx5+25%
- Highest frequency20,000 Hz vs 40,000 Hz2×
- LDACNo · HP-C28BTF: Yes
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Open-ear |
| Ear cup design | — | Closed-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 6.1 mm | 5.5 mm |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 40,000 Hz |
| Impedance | 16 Ω | — |
| Sensitivity | 90 dB | 42 dB |
| Hi-Res Audio | — | Yes |
| Noise control | ||
| Active noise cancelling | — | No |
| Microphones | — | 4 |
| Battery & charging | ||
| Battery life | 3.5 h | 8 h |
| Total with charging case | — | 35 h |
| Charging time | 1.5 h | — |
| Quick charge (claimed) | — | 10 min → 4 h |
| Fast charging support | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.4 |
| Bluetooth codecs | AAC, SBC | LDAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | No |
| LDAC | No | Yes |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | — |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Earbud weight (each) | 3 g | 10 g |
| Protection rating | IPX4 | IP55 |
| Water resistance (IPx) | IPx4 | IPx5 |
| Dust protection (IP) | — | 5 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
