we are a professional manufacturer of many kinds of handheld talkie walkie,supply durable products and producers' price, deliver prompt Detailed Description Features: 128 Stored Channels CTCSS\ DCS Function 5W/3W/1W power shift VOX Function&FM radio PC Program&Wire clone FunctionTechnical Specifications: GeneralFrequency range136-174MHZ,400-470MHzFrequency combinationPhase lock frequency synthesizeOperation modeSimplex of co-frequency or alien frequencyOperating temperature range-10 to +60Rated VoltageDC 7.4V(Li-ion battery)Antenna impedance50ASize85×53 ×29mm(no including antenna)WeightAbout 220g(including battery)TransmitterRF power output5W/3W/1WModulate modeFrequency modulateMaximum Frequency offset≤5KHzRadiation< -60dBPre-Emphasis characterEvery octaveTransmitting current≤1500mAReceiverReference sensitivity0.15uV(12dB SINDA)Squelch sensitivityRadio 0.12uVInter-modulation anti-interference>50dBAudio power≥400mWReceiving current≤140mASquelch waiting current20mARadioFrequency RangeFM:87.5 108MHz Accessories: One charger One Ni-MH battery One rubber antenna One user's manualif you are interested in our products, pls feel free to contact me anytimetrademanager: qzhltIn addition: 136-174MHz and 400-470MHz is optional, but if you didnt point which band you want when you placed the order, we will deliver 400-470MHz.