【Professional Intercom】 The walkie-talkies have 16 preset channels, you can choose any of the same channels to talk. It is more stable than your phone in some situations, especially in remote areas or when the signal is weak. 【Clear and Loud Sound】 The walkie-talkies have DCS and CTCSS to block external interference signals and reduce noise. High-quality speakers and microphones make communication between the two parties clearer. Each radio comes with a headset and shoulder strap, so you can talk directly through the headset microphone for hands-free use. 【LONG BATTERY LIFE 】 Each walkie-talkie has a 1500mAh high-capacity lithium-ion battery. The radio has a low battery warning to remind you when to charge or replace the battery. USB charging cable, a variety of charging methods. You can charge the walkie-talkie via phone adapter/car charger/laptop/power bank. 【Easy to use】Automatic voice transmission and reception function, more convenient for hands-free calls anytime, anywhere. The emergency alarm function provides increased safety for those working in dangerous and vulnerable environments, such as police, security personnel and firefighters. 【Easy to use】Automatic voice transmission and reception function, more convenient for hands-free calls anytime, anywhere. The emergency alarm function provides increased safety for those working in dangerous and vulnerable environments, such as police, security personnel and firefighters._CA