Professional 10 pack of two way radios; 16 channels preset CTCSS/DCS; compatible with other Retevis FRS radios on the same channel and CTCSS/DCS; such as retevis RT22 H777 RT21 RT68 B3S B3B RT22P etc
Hands-free 2 way radio; vox function make sure you achieve transmitting activated by voice; press the up key and power-on on channel 7 to turn on the function release your hands; no computer