vs
4.8Noise control & calls3.9
4.4Battery3.8
5.2Build & features2.5
Why is Flex Open Earbuds better than RB-F10DE?
- Microphones4 vs 22×
- Charging time2 h vs 2.5 h+25%
Why is RB-F10DE better than Flex Open Earbuds?
- Total with charging case21 h vs 25 h+19%
Specifications
Side by side
| Sound | ||
| Fit | Open-ear | In-ear |
| Ear cup design | Open-back | — |
| Driver type | Dynamic | — |
| Driver size | 12 mm | 12 mm |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 20,000 Hz | — |
| Impedance | 12 Ω | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | No | No |
| Transparency / ambient mode | Yes | — |
| Microphones | 4 | 2 |
| Noise reduction for calls | Yes | Yes |
| Battery & charging | ||
| Battery life | 7 h | 7 h |
| Total with charging case | 21 h | 25 h |
| Battery capacity | 70 mAh | — |
| Charging time | 2 h | 2.5 h |
| Quick charge (claimed) | 10 min → 1 h | 15 min → 1 h |
| Fast charging support | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.4 | 5.4 |
| Bluetooth codecs | SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | No | No |
| aptX | No | No |
| LDAC | No | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | — |
| Latency | 200 ms | — |
| Low-latency game mode | Yes | — |
| Smart & streaming | ||
| Voice assistant | Google Assistant, Siri | Google Assistant, Siri |
| Companion app | Yes | — |
| Design & build | ||
| Weight | 49 g | — |
| Earbud weight (each) | — | 8.7 g |
| Protection rating | IPX4 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | — |
| Colours | Black, Teal, White | — |
| Features | ||
| Touch controls | Yes | — |
| Hands-free calls | Yes | Yes |
