vs
7.2Noise control & calls3.0
7.1Battery6.7
4.8Build & features3.0
Why is AH-C840NCW better than OpenWear Stereo Pro?
- Active noise cancellingYes · OpenWear Stereo Pro: No
- Battery life10 h vs 8 h+25%
Why is OpenWear Stereo Pro better than AH-C840NCW?
- Hi-res codec (LDAC / aptX HD / LHDC)No · AH-C840NCW: Yes
- LDACNo · AH-C840NCW: Yes
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Open-ear |
| Ear cup design | Closed-back | Open-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 12 mm | — |
| Number of drivers | — | 4 |
| Lowest frequency | — | 20 Hz |
| Highest frequency | — | 40,000 Hz |
| Spatial / 3D audio | — | Yes |
| Head tracking | — | Yes |
| Hi-Res Audio | — | Yes |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | No |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 10 h | 8 h |
| Battery life with ANC | 7 h | — |
| Total with charging case | — | 45 h |
| Battery capacity | — | 56 mAh |
| Charging time | 2 h | — |
| Quick charge (claimed) | — | 10 min → 2 h |
| Fast charging support | — | Yes |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.4 |
| Bluetooth codecs | LC3, AAC, SBC | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | Yes |
| aptX | No | No |
| LDAC | No | Yes |
| Multipoint (two devices) | Yes | — |
| LE Audio | Yes | — |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 72 g |
| Earbud weight (each) | 5 g | — |
| Protection rating | IPX4 | IP54 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | — | 5 |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
