Retevis RT21 Updated 3000mAh Two Way Radios Long Range,Walkie Talkies with Earpiece,SOS Alarm,16CH,Portable 2 Way Radios for Security Cruise Camping Events(4 Pack)

3000mAh battery capacity; two way radios with super large battery will last days continuous using; suitable for long outdoor travel or shift ^^ Walkie talkies with earpiece give you clear call and free your hands; built-in secure call can keep your secure communication ^^ Heavy duty walkie talkies with durable radio body; high-quality antenna; belt clip and battery are not easy to be damaged and support long-term use ^^ Long range walkie talkies; strong penetration and audio keep you and your team always stay in contact with loud clarity sound quality in building or outdoor ^^ Easy to use, no complicated buttons; ready to use out of the box; with remote emergency alarm; VOX; squelch; low battery reminder and other practical functions