You can find the technical specification table for NuraBuds here:
| NuraBuds 2 | NuraBuds 1 (previously available on NuraNow) | |
|---|---|---|
| Driver size | 10mm | 10mm |
| Driver type | Dynamic, low-distortion | Dynamic, low-distortion |
| Frequency range | 20Hz—20kHz | 20Hz—20kHz |
| Charging cable type | USB-A to USB-C | USB-A to Micro-USB |
| Charging cable length | 20cm | 20cm |
| Bluetooth codecs | AAC, SBC, aptX | AAC, SBC, aptX |
| Bluetooth Version | 5 | 5 |
| Bluetooth Range | 15m | 15m |
| Bluetooth QuickSwitch | Yes | Yes |
| Battery life | 4 hrs wireless, 16 hrs total with case | 4 hrs wireless, 10 hrs total with case |
| Individual bud battery | 40 mAh | 40 mAh |
| Case battery | 400 mAh | 205 mAh |
| Single Bud weight | 4.2g | 4.2g |
| Case weight (no buds) | 18.1g | 18.1g |
| Water resistance rating | IPX 4 | IPX 4 |