Check the listing for details. Retevis GMRS Mobile Radio 40W Mobile Transceiver Base Station 8 Repeater Channel. Color: Black, Condition: New. Listed at 143.99 USD. Retevis RA87 MicroMobile 40W GMRS Two-Way Radio Long Range with 260 Privacy Codes,LCD backlight dual frequency display,Two groups of simple relay radio stations. Long Range GMRS mobile radio; high-power two-way radio; 8 base station channels can be connected to nearby relay stations to extend the distance; a powerful assistant for off roaders, overlanders, farmers, RV owners, and outdoor enthusiast. Easy to use mobile radio; support VFO mode; quickly set the frequency through the microphone digital buttons; no need to use the computer to change functions or settings; making it easy to use gmrs radio. Reliable and durable; uses aluminum substrate inside; RA87 mobile radio has a good heat dissipation; safer and more reliable to use it; easy to install.