Why is DJ-P421MA better than RB648?
DJ-P421MA has no measurable advantages in this pair.
Why is RB648 better than DJ-P421MA?
RB648 has no measurable advantages in this pair.
Specifications
Side by side
| Radio & range | ||
| Radio standards | Japan specified low-power (422 MHz) | PMR446 |
| Licence | Licence-free | Licence-free |
| Digital mode (DMR / dPMR) | — | No |
| Frequency ranges | — | 446 MHz |
| Transmit power | — | 0.5 W |
| Channels | — | 16 |
| Maximum range (claimed) | — | 2 km |
| Power & battery | ||
| Battery capacity | — | 2,000 mAh |
| Battery voltage | — | 3.7 V |
| Power source | AA / AAA batteries, Rechargeable pack | Rechargeable pack |
| Runs on AA/AAA batteries too | Yes | — |
| USB-C charging | — | Yes |
| Battery level indicator | — | Yes |
| Design & durability | ||
| Weight | 96 g | — |
| Width | 54 mm | — |
| Height | 92 mm | — |
| Depth | 18 mm | — |
| Protection rating | IP67 | IP67 |
| Water protection (IPx) | IPx7 | IPx7 |
| Shockproof | — | Yes |
| Display | — | Backlit display |
| Features | ||
| VOX (hands-free) | Yes | Yes |
| Key lock | — | Yes |
| Voice encryption / scrambler | Yes | — |
| Connectivity | ||
| Headset / earpiece jack | — | Yes |
| Connectors | — | USB-C, Kopfhörer |
