Features: Frequency measurement, wireless reception, fast decoding, and automatic detection. After the frequency measurement is completed, the frequency counter and the walkietalkie can ensure that the frequency is accurate. Frequency meter can test frequency, subtone, frequency hopping, encrypted frequency point. The frequency meter can communicate with the walkietalkie by pressing the PTT button to detect the accuracy. The frequency meter can measure the frequency of the walkietalkie and is very useful. Specifications: Item Type: Walkie Talkies Frequency Meter Material: ABS Shell Color: As Picture Shown Built-in Lithium Battery: 500 mAh Language Voice: Chinese and English voice Interface Display: Switch between Chinese and English How to use: 1. Turn on the walkie-talkie. Press and hold the power button for 3 seconds to turn on the frequency meter 2. Press the frequency measurement button on the frequency detector and wait for the data to be received 3. Press and hold the transmitter button on the walkie-talkie for 3 seconds, and the frequency tester will receive the data and display the video as complete. 4. Press and hold the transmitter button on the walkie-talkie for 3 seconds, and the frequency tester will receive the data and display the video as complete. Pacage includes: 1* Mini Radio Frequency Meter 1* USB Charger Cable