we manufacture many kinds of handheld walky talky,supply durable products andoffer best price, deliver prompt Detailed Description Features: 400-470MHz 16 Stored Channels jacklight functionCTCSS/DCS Function TOT English/Chinese voice prompt PC Programm Wire Clone Function Low power alarmTechnical Specifications: HLT-F1Frequency range400-470MHzFrequency CircuitPLL CircuitOperating ModeF3EOperation modeSimplex of co-frequency or alien frequencyOperating temperature range-30°C to +60°CRated VoltageDC 3.7V±15%Antenna impedance50ΩOperation Distance2-10kmSize101×54×36mm(no including antenna)Weight 220g(including battery)TransmitterRF power output≤3WFrequency Stability±2.5ppmMaximum Frequency offset<5KHzRadiation≤-60dBModulation Distortion5%(300Hz-3KHz)Transmitting current≤900mAReceiverCircuitryDouble Super HeterodyneIntermediate Freq.1st IF38.850MHz2nd IF450KHzReference sensitivity0.15uV(12dB SINDA)Squelch sensitivity0.12uVSquelchprogramableReceiving current100mA 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: qzhlt