3000mAh Long Standby BatteryFPCN10A-PRO UHF walkie talkies keep work over 24 hours, the standby status about 190 hours after 4-5H full charge, longer endurance, saving enterprise communications costs ^^ Customized Channel NameCustomize the private channel name with SAMCOM frequency program software, like Security Team/ Post-Production Team, or just edit it to your teammate's name ^^ Big PTT & Group Call FunctionOversized PTT button for quick response + group call feature to broadcast to multiple teams simultaneously, ideal for event coordination ^^ Long Distance 5 Miles Walkie TalkiesDelivers 2-5 mile range depending on terrain, with 2-watt transmission power for enhanced signal penetration in urban/buildings (actual range varies with obstacles and interference) ^^ SAMCOM Reliable Tech SupportSAMCOM items provide 3 year warranty and 30 days no reason to return; 3 year warranty for radio body and 1 year warranty for accessories