Retevis RT-5R Walkie Talkies Long Range Rechargeable 5W 128CH UHF/VHF Dual Band Two-way Radio with Speaker Mic (4 Pack) Up to 128 memory channels; dual band UHF/VHF help you avoid busy channels 1400mAh Li-ion battery provided more time using for your outside activity and you easy to find the replacement battery 5W/1W power switch allow you to choose high power to maximize range or low power to conserve battery life DTMF advantages including fast and reliable transmission and high transmission speed Simple and Convenient return process;1 year radio warranty and 30 days no reason to return Service industry: Hotel,Restaurant Supermarket,etc; Security,Property Management Police,ConstructionSites Transportation Warehouse Ports, Logistic Industry ,group Traveling, Church security and School service Three scan ways (TO/CO/SE): you can chose the model to seek the frequency as you need Support frequency,channel and FM frequency scan you can set the channel step when you seek the frequency you need. You can only seek the channels you saved when you seek the channels If possible, you can use it to listen the local police and fire chatter, emergency report, weather or other news You also can listen the FM radio while receive the signal of your partner Short press the monitor button to turn on the flashlight; Press again for SOSflashing light which is very useful when you are outside at night