vs
5.2Noise control & calls6.0
6.9Battery4.2
4.8Build & features5.0
Why is AH-C840NCW better than FreeBuds 6?
- Battery life10 h vs 5 h2×
- Battery life with ANC7 h vs 4 h+75%
- Driver size12 mm vs 6 mm2×
Why is FreeBuds 6 better than AH-C840NCW?
- Hi-res codec (LDAC / aptX HD / LHDC)No · AH-C840NCW: Yes
- Charging time2 h vs 0.5 h4×
- LDACNo · AH-C840NCW: Yes
- Total with charging case35 h vs 36 h+3%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | — |
| Driver type | Dynamic | Planar magnetic |
| Driver size | 12 mm | 6 mm |
| Number of drivers | — | 2 |
| Lowest frequency | — | 50 Hz |
| Highest frequency | — | 2,000 Hz |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Adaptive ANC | — | Yes |
| Transparency / ambient mode | Yes | — |
| Microphones | 2 | — |
| Noise reduction for calls | — | Yes |
| Battery & charging | ||
| Battery life | 10 h | 5 h |
| Battery life with ANC | 7 h | 4 h |
| Total with charging case | 35 h | 36 h |
| Battery capacity | — | 39 mAh |
| Charging time | 2 h | 0.5 h |
| Quick charge (claimed) | 5 min → 1 h | — |
| Fast charging support | Yes | Yes |
| Wireless charging (case) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.2 |
| 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 | Yes |
| LE Audio | Yes | — |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | Yes | — |
| Design & build | ||
| Earbud weight (each) | 5 g | 4.9 g |
| Protection rating | IPX4 | IP54 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | — | 5 |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
