The FRS two way radio is extremely compact and slim for business use; featured with 16 channels and rich features; license free; you don't need a license for RT22 walkie talkie0-9 level voice activated transmit function allows real hands free operation; adjusting the level according to the environment allows you to get the best audio qualityEmergency alarm helps you be prepared for any danger and alert team member; channel lock avoids accidental button changes;working out of the box with each othersIncludes six way multi gang charger with multiple charging protections; overcharge; over voltage and short circuit protection; more safer for charging the 6 pack 2 way radios or batteries at the same timeFits in your palm;easy to carry and simple to operate;provides adequate coverage in many environments and the size and weight can be a huge advantageSave space; from the bottom of the base to the top of the antenna is about 7 inchesHardware Version Identification Number (HVIN) is RT22; and the certification number is 2AAR8RETEVISRT22
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| Retevis RT22 | Retevis RB28 | Retevis RT45P |
| License Free | ✓ | ✓ | ✓ |
| Number of Channels | 16 | 22 | 22 |
| NOAA Weather Alert | | ✓ | ✓ |
| Battery Capacity | 1000 mAh | 1500mAh | 1000 mAh |
| 10 Call Tone | | ✓ | ✓ |
| Large Screen | | ✓ | ✓ |
| Charging Type | Six Way Multi Charger | USB-C Charging | 2 in 1 USB-C Charging |
| with Earpieces | | ✓ | |
