Why is HP-C28BT better than E3?
HP-C28BT has no measurable advantages in this pair.
Why is E3 better than HP-C28BT?
- Battery life3.5 h vs 4.5 h+29%
- Driver size6.1 mm vs 10 mm+64%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Driver type | Dynamic | Dynamic |
| Driver size | 6.1 mm | 10 mm |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 16 Ω | 16 Ω |
| Sensitivity | 90 dB | 99 dB |
| Noise control | ||
| Active noise cancelling | — | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 3.5 h | 4.5 h |
| Charging time | 1.5 h | — |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.3 |
| Bluetooth codecs | AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | — | Yes |
| USB-C | Yes | Yes |
| Design & build | ||
| Weight | — | 51 g |
| Earbud weight (each) | 3 g | — |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
