vs
5.2Build & features6.9
Why is Flex Open Earbuds better than V40i?
Flex Open Earbuds has no measurable advantages in this pair.
Why is V40i better than Flex Open Earbuds?
- Water resistance (IPx)IPx4 vs IPx5+25%
- Charging time2 h vs 1.5 h+33%
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | Open-ear |
| Ear cup design | Open-back | Open-back |
| Driver type | Dynamic | — |
| Driver size | 12 mm | — |
| Lowest frequency | 20 Hz | 20 Hz |
| Highest frequency | 20,000 Hz | 20,000 Hz |
| Impedance | 12 Ω | 16 Ω |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | — |
| Transparency / ambient mode | Yes | — |
| Microphones | 4 | — |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 7 h | — |
| Total with charging case | 21 h | — |
| Battery capacity | 70 mAh | — |
| Charging time | 2 h | 1.5 h |
| Quick charge (claimed) | 10 min → 1 h | — |
| Fast charging support | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | SBC | — |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | — |
| aptX | No | — |
| LDAC | No | — |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Latency | 200 ms | — |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Voice assistant | Google Assistant, Siri | — |
| Companion app | Yes | — |
| Design & build | ||
| Weight | 49 g | — |
| Earbud weight (each) | — | 10.1 g |
| Protection rating | IPX4 | IP55 |
| Water resistance (IPx) | IPx4 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Colours | Black, Teal, White | — |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
