vs
7.2Battery8.5
5.7Build & features7.2
Why is AMIRON 300 better than OpenFit 2+ T921?
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · OpenFit 2+ T921: No
- Earbud weight (each)4.4 g vs 9.4 g2.1×
- LDACYes · OpenFit 2+ T921: No
Why is OpenFit 2+ T921 better than AMIRON 300?
- Battery life10 h vs 11 h+10%
- Water resistance (IPx)IPx4 vs IPx5+25%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | Open-ear |
| Ear cup design | Closed-back | Open-back |
| Driver type | Dynamic | Dynamic |
| Driver size | 10 mm | — |
| Lowest frequency | 20 Hz | — |
| Highest frequency | 40,000 Hz | — |
| Impedance | 32 Ω | — |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | Yes | — |
| Transparency / ambient mode | Yes | — |
| Microphones | 6 | — |
| Noise reduction for calls | Yes | — |
| Battery & charging | ||
| Battery life | 10 h | 11 h |
| Battery life with ANC | 7 h | — |
| Total with charging case | 40 h | — |
| Charging time | 2 h | — |
| Fast charging support | Yes | — |
| Wireless charging (case) | Yes | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.3 | 5.4 |
| Bluetooth codecs | LDAC, AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | No | No |
| LDAC | Yes | No |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | Yes | — |
| Design & build | ||
| Earbud weight (each) | 4.4 g | 9.4 g |
| Protection rating | IP54 | IP55 |
| Water resistance (IPx) | IPx4 | IPx5 |
| Dust protection (IP) | 5 | 5 |
| Colours | — | Black, Grey, Purple |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
