Retevis RT21 Review

Walkie talkies have grown to be a widely used mode of communication, especially by working groups and families in the US. When it comes to daily usage, these devices are the way to go since you can utilize them on various occasions.

One of these incredibly handy walkie talkies is the Retevis RT21. Let’s have a more detailed review of this product for further understanding and insights.

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  • Brand: Retevis
  • Range: 2.5 miles
  • Power output: 2.5 Watts
  • Frequency ranges: 400-480MHz (UHF)
  • Battery: rechargeable Li-ion battery
  • Size: 4.8 x 2.17 x 1.1 inches
  • Weight: 0.39 lb
  • Waterproof: no information
  • License needed: yes,  if FRS channels will not be used (amateur / FCC license)


Scope of Delivery

The Retevis RT21 walkie talkies come with many notable and excellent features, but let us first go over the important things you would want to see when you buy this device.

The product packaging may be a set of two, four, six, eight, or ten radio handsets, whichever you prefer. It includes rechargeable batteries for each radio with chargers, belt clips, slings, earpieces, a user’s manual, and a warranty card.





You can directly use Retevis RT21 walkie talkies as they have the same frequency already programmed. It comes with clear usage instructions and has soft buttons that you can easily adjust.

To use the device, all you need to do is switch on the power button and press the PTT button to turn off the receiver and turn on the transmitter. It’s a better choice for people looking for a walkie talkie that offers ease of usage.



The Retevis RT21 walkie talkie should be water-resistant, so you won’t have to worry with a sudden rainstorm and accidental splashing of water on the device. It also comes with a compact shell for dust and impact protection to prevent the radio set from getting damaged easily, making it much preferable for its durability.




Power Source

When choosing a walkie talkie, you would often consider having one that has a longer usage time. The Retevis RT21 device works using a 1,100 mAh Li-ion battery, which can survive for up to 10 to 12 hours in constant use and may last for a more extended period in standby mode.

On the other hand, you can recharge the Retevis RT21 walkie talkie by switching it off and plugging the device into the charger and the power socket. The charging time may take about 4 hours for full completion.



The Retevis RT21 walkie talkie ranges from 0.5 to 2.5 miles, depending on the condition of the terrain. It can reach an extended range in an open field and other areas with no obstructions at all. While in the city, it somehow has a restricted range due to interference, such as buildings and infrastructures.



The frequency band of Retevis RT21 is FRS with 400 to 480MHz. It is a license-free radio that contains 16 channels available to prevent unnecessary calls from interrupting ongoing communication.

This device is highly operational over FRS channels in the US and can be compatible with other radio models if set to the same frequency and CTCSS (Continuous Tone-Coded Squelch System).







Having a walkie talkie with several excellent features is what we practically want. We often look for these things to be able to secure ease of communication when using the device. Let’s talk over the main features of Retevis RT21 radios, which make it much preferable than its competitors.

Firstly, Retevis RT21 radio has an earpiece that makes your line of communication flow clearly and smoothly. It’s a discreet earpiece that works to reduce the background noises on your surroundings, making this device suitable for hunting, construction sites, bars, restaurants, hotels, and other organizations.

Moreover, this walkie talkie has an integrated antenna that provides long-range transmission, reaching up to a maximum of 2.5 miles, as mentioned earlier. Besides, it’s a highly durable device and comes with enhanced accessories such as a solid shell and belt clip.

Likewise, the Retevis RT21 provides fall protection of one meter, so there’s a great chance that it will survive the impact thank some other similar products.

Apart from that, it’s ideal for people who want a device that can operate for a more extended period. Its battery can last for up to a maximum of 12 hours and has charging support that recharges it much more quickly.

Besides, you’ll quickly know when the battery is about to die as this model of walkie talkie has an alarm system. It also has a power-saving mode, which turns off the device if not in use for a few minutes.

Furthermore, the Retevis RT21 walkie talkie has innovative software that lets it function using voice commands. It’s ideal for those people who need hands-free communication.

The device does not only allow you to have a hands-free conversation, but it can also respond to voice commands in two languages, either English or Chinese. It’s one of the few bi-lingual walkie talkies available on the market today.

One more important thing about this device is that it operates with privacy and encryption, which secures your line of communication, making it difficult for anyone to barge in. It also contains a channel lock for easy searching of available channels.



This model is paving its way in the US market today due to its promising features, utilized widely by business organizations and groups of families. As I write this review, it costs $59.99 for a pack of four on Amazon and is more affordable than some similar products.



  • Has long-lasting batteries
  • Has power-saving mode
  • Durable and offers one-meter fall protection
  • Clear and smooth communication
  • VOX (hands-free function)
  • Has a channel lock feature


  • Bounded range with the interference of buildings and establishments
  • Earpiece go around the ear which can be quite uncomfortable
  • Cannot reach more than a three-mile radius


Conclusion – Retevis RT21 Review

To sum it up, you’ll find it hard to find a set of walkie talkies that has all the advantages offered by Retevis RT21. Though there may be a few downsides, you can still be sure that this product functions well for its purpose.

Besides, it isn’t only durable and long-lasting, but it also comes with safety and security features, as well as a clear and uninterrupted channel of communication.

You may also use its VOX function for a hands-free conversation and is highly suitable for your business and family endeavors. Aside from that, it has a reasonable price, which makes it an excellent choice to answer your needs.

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Where can I find a manual for the Retevis RT21?

You can get a copy of the user’s manual for Retevis RT21 online by visiting this site:

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Founder of & Tech enthusiast. Interested in gaming, computers, and walkie-talkies.

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