**********All the two way radios have been set to same frequency when out of the box and just on the same channel can communicate; easy to change the channel and easy to find your group channel*****Compared with other small walkie-talkies; the distance is longer; which is very suitable for your business activities like construction; school; logistics; church and warehouse*****Flashlight function makes things handy in dark environment; fast and safe USB charging 2 way radios with adapter will provide your team more convenience; empower your business with a faster way to communicate*****Multi feature radios with good signal and clear voice; scanning allows you locate conversations in progress*****1000mAh battery capacity supports 8-9 hours continuous use or longer; durable battery latch teeth maintain solid contact to promise your continuously communication