Uses 1 time for communications on a 3 day cruise.  They are in perfect condition and come as shown with everything that came new


4 x Batteries

They work much better than your typical GMRS or FRS radios since 900mhz will bounce around the ship.. They transmit at 1 watt, similar to other 900MHZ radios such as the DLR and DTR radios.


These are analog and DMR capable in the 900mhz 33cm band.  They are not frequency hopping ( FHSS), but do have similar coverage as the DTR and DLR radios.


Retevis has the programming software on their web page.  Click on support tab to download the software.  https://www.retevis.com/rt10-two-way-radio-for-business-128-channel-900-mhz-us