Specifications Brand IradioProduct Model UV 99Frequency Range FM 64 108MHz RX 108 520MHz AM Band Reception TX 136 174MHz 400 480MHzStorage Channels 1024 2 VFO ChannelChannel Spacing 25KHz 12 5KHzOperating Voltage 12 6VCharging Method Type C Dock ChargingDimension 155 65 45MM Antenna is not included Weigh About 395 gFrequency Stability ±2 5ppmWorking Temperature 20℃ 60℃Features 1 The power range of this walkie talkie is 10W 20W which can maintain stable and reliable communication connections in complex environments and provide a wider communication coverage area 2 Note that the power level is closely related to the frequency of the walkie talkie and whether the battery is sufficient Remember to fully charge the walkie talkie and switch the power level to H It is best to use it near the center frequency of 144 430MHz 3 Fast and Efficient It has good compatibility with a variety of devices and provides an efficient and convenient charging method for the walkie talkie s battery 4 The side keys and keyboard of this walkie talkie can be customized with shortcut functions and you can customize shortcut buttons according to your own usage needs 5 Press the menu button to enter the menu interface select Key Define and customize a shortcut function for a button based on your usage preferences as Freq Detect Then press the shortcut button to decode with one click and quickly match the frequency Two walkie talkies can communicate normally and smooth