Retevis H-777 2 Way Radio UHF Flashlight CTCSS/DCS Handheld Radio 16CH Walkie Talkies(4 Pack) with Speaker Mic (4 Pack) Support USB charge and DC charge directly;earpiece and speaker mic will provide real hands free Emergency Alarm and Built-in Led torch make things easier when in dark environment Low Voltage alert will remind you very well and intelligent charging is saving battery life Easy to operate and long range will work well for various business and environment Simple and Convenient return process;1 year warranty and 30 days no reason to return