we manufacture many kinds of handheld 2 way raido<portable radio>,cb,supply durable products andoffer best price, deliver prompt Detailed Description Features: 16 Stored Channels CTCSS\ DCS Function NiMH/Li-ion battery(1100mAh) Standby for long time(120Hs) PC Programmable Wire Copy Function H\L Power shiftTechnical Specifications:General TC-500 Frequency range400--430MHz \ 440--470MHzFrequency CircuitPLL CircuitOperating ModeF3EOperation modeSimplex of co-frequency or alien frequencyOperating temperature range-30 to +60Rated VoltageDC 7.2V±15%Antenna impedance50ΩOperation Distance3-15kmSize110*54*836mm(no including antenna)Weight 220g(including battery)TransmitterRF power output5WFrequency Stability±2.5ppmMaximum Frequency offset≤5KHzRadiation≤-60dBModulation Distortion5%(300Hz-3KHz)Transmitting current≤1100mAReceiverCircuitryDouble Super HeterodyneIntermediate Freq.1st IF38.850MHz2nd IF450KHzReference sensitivity0.15uV(12dB SINDA)Squelch sensitivity0.12uVSquelchprogramableAudio power≥500mWReceiving current100mASquelch waiting current20mAAccessories: One charger One Ni-MH battery One rubber antenna One user's manual if you are interested in our products, pls feel free to contact me anytimetrademanager: qzhlt In addition: 400-430MHz and 440-470MHz is optional, but if you didnt point which band you want when you placed the order, we will deliver 440-470MHz.