I purchased the 10-pack RT22 radios for use at a Gala that was being held in a very large museum. I love how small these radios are, and how easy they are for anyone to use. I've used several types of radios over the years, and these are by-far my preferred ones, strictly because of their size and low-weight. As far as their range of communication, they held up really well compared to the previous, more expensive, brands that I have used too. However, my use would probably be considered short-distance. Definitely under 1 mile at all times. Prior to the evening of the Gala, I tested the range of each radio in my neighborhood, in a 7-story building, and at the museum. Here are the results from each (fyi: all of these tests were using headsets connected to the radios):Neighborhood test - I had my wife stay in the house and I walked several blocks away. I could hear her very clear, even when turning corners, putting multiple houses in-between us. I would say I walked about a quarter to half a mile away. The only time the signal broke up was when I walked down a hill, and the ground obstructed what would be considered a direct line-of-sight to the house, which also included multiple houses in-between. The signal got very fuzzy, and then cut out altogether for about 500 ft until I reached the incline back up the hill.7-story Building test: I had coworkers with radios on every floor of our 7-floor concrete building. I then went outside the building and stood behind the concrete parking garage that is adjacent to the building, obscuring me from it. Everyone was able to hear each other perfectly. Even the person on the top floor was able to hear the person on the 1st floor, through the 6 floors of concrete. The only time I had issues with signal breakup was when I was enclosed in the elevator going up/down the floors. The signal was quite bad in there, but I could still hear jumbled voices talking. It wasn't a total signal loss, but they are not usable if in a totally-enclosed concrete shaft/small room it seems.Museum/Gala night use: I had a team of 10 people positioned at various locations through a very large, one story museum. The distance between some people was as far, if not a bit further, than my neighborhood test. I'm happy to say that there was only one instance of signal breakup the entire night, and it was restricted to one person's radio. I'm not sure where that person was, but I am thinking they may have been around the loading dock area, which would make sense with it being a concrete box far away from the rest of us. That was only once during a 6-hour period, so in my opinion, the radios worked perfectly! The only issues I would say we had, came from the headsets we purchased, with some people's microphones and headphones not being clear at times. But, that is a different product review!I did take one star off of the "durability" rating, simply for the belt holster that you put the radio into. I can see them not lasting through someone who might be a bit rough on them. They worked great for us, but I think the plastic clip that connects to the belt could definitely be broken off without too much effort. That didn't happen to any of us, though. It is just an observation! I'm sure they are very cheap to replace. As for the durability of the radios themselves, I am very happy with the overall construction of them. They are lightweight plastic, but ultimately feel like a sturdy product to me.As far as the sound from the radio speaker itself, when not using a headset. I did test it, and it works good. I didn't care for the sound of it that much though, because it definitely has a kind of 'radio screech' sound when someone is talking. On the very high-end of the audio spectrum, as opposed to the mid or low end. So pretty 'tinny' sounding, and if you have someone with a high-pitched voice, it isn't pleasant if the volume is turned up too high. I definitely suggest using a headset. However, it is completely usable without one, and you can understand the person clearly.Overall, I am very happy with this purchase. I will get to use them again during an upcoming marathon that historically ends up being a very very cold day. I will see how long the batteries last in those conditions. I had no problems with any of the radios dieing in a 6-hour timeframe during the gala, though. I love the light-weight and compact design of these radios. They are no longer than a current smartphone, and just a little bit wider than one, so they can fit comfortably in a pocket if you don't want to use a belt clip. I am so happy I purchased these over the larger, bulkier designs, and everyone on my team agreed!

I've outfitted a neighborhood watch / fire-wise group with these, parting them out as singles (one for $10 with USB cable or with charger for $18. ) People are amazed that you can get a nice looking/sounding radio for 10 dollars that communicates well around the neighborhood.PROSSleek. Smaller than a smartphone and much lighter.Powerful. We have gotten 6 miles, though 0.5 to 2 is average.Programable (we use one frequency for check-ins and have an emergency channel that uses same freq but with a privacy tone; so those who want to keep radio on 24/7 for alerts but not be bothered with chit-chat can!)Software/cable included. And it works well. Chirp also works (which I've used to re-purpose one for myself as a ham radio.)Battery life - even though battery is small, mere monitoring can last for 2+ days and with moderate transmitting a day use is possible. (They recommend disconnecting after charging to be absolutely battery safe, though monitoring while plugged in is possible.)Retevis support is top notch. Even though there is language barrier they do their utmost to make stuff right and answer questions.CONSOnly 16 channels. I left out the low power FRS channels, but it would be nice have to all 22 or even double that for privacy code programming.Don't know where scan is landing. OK one reason its so inexpensive is there is no display which means when scan finds a signal you won't know what channel it's on. You can push to talk and reply "blindly" how ever.Push to talk button is a little tricky; newbies or young kids may have trouble.WISHESMore colors. I want my "ham" programmed one bight red so no one uses by mistake! (label will have to do for now.)Charging base included in package. Might add a buck or two but wold be worth it.Full disclosure. Retevis encouraged me to write a full review after my several successful dealings with support. This merely kicked my butt to actually write something. 5 stars was my plan all along.

I have now purchased these twice.First we bought them for our hotel security to be able to keep in contact with our front desk team at night. We have a small 70 romm, 3 story hotel. They work great and are simple to charge. They are nice and lightweight which makes it easy for women to clip on a skirt or pants and not have the radio drag down the clothing.We purchased the second time because of how well the first test of them went. Now the housekeeping staff and maintenance all have one to help us communicate. For a small inexpensive investment our whole hotel team can now have a radio.We have been using them for about 4 months with no problems. I have used many radios over 7 years, and these are by far the best. No antenna to fall off. Easy to charge...plugs in like a cell phone, no clunky base charger to deal with. Lightweight. Clear reception. 16 channels to choose from.I do not know if they would work for a tall building, but for our 70 room 3 story hotel they are perfect.

Excelente

La verdad es que no son la mejor opción, para operar en un edificio de 10 niveles funciona, pero mas de esos niveles no funcionan bienLos aparatos tienen funcionamiento bastante deficienteNO son recomendables para tener comunicación a mas de mil metros o en mas de 10 niveles

No tienen alcance a más de 20 mts en obra