1This product can meet your requirements, both for walkie-talkie users and hobbyists. It can measure not only the frequency point, but also the subtone. 2Automatic decoding function. This is the useful tools for the signal testing and radio maintenance. 3The frequency counter can continually test the analog radio signal (handhold radio, wireless phone, etc) and digital radio signal. 4Simple operation, one key mode. This is a great tool for detirmining what tone frequency a radio system is using. 5The Three-stage elongated gain antenna can gain the decoding precision and gain the distance. Description: In the walkie-talkie we use in our daily life, usually they will be aging. When we need to buy the walkie-talkieagain, and need to go with the old walkie-talkie, so we're going to use this. We can put the frequency meternext to the walkie-talkie, and the frequency and subtone in the walkie-talkie will be automatically scanned bypressing the launch button. Then we can easily connect the data to the newly purchased walkie-talkie and testit out no matter what model. Features: 1. This product can meet your requirements, both for walkie-talkie users and hobbyists. It can measure not onlythe frequency point, but also the subtone. 2. Automatic decoding function. This is the useful tools for the signal testing and radio maintenance. 3. The frequency counter can continually test the analog radio signal (handhold radio, wireless phone, etc) anddigital radio signal. 4. Simple operation, one key mode. This is a great tool for detirmining what tone frequency a radio system isusing. 5. The Three-stage elongated gain antenna can gain the decoding precision and gain the distance. Specifications: Material: ABS Color: Black Frequency range: 100 - 999.9999MHz Subaudio range: Analog/Digital Automatic Decoding Resolution: 0.1k Error value: +/- 0.3KHz Operating voltage: 9V battery Automatic shutdown time: 60 seconds Antenna length: Approx. 7cm / 2.8 inch Screen display: Up line display frequency point, down line display subtone Long press the start button: Start / Stop Short press the start button: Reset Size: Approx. 92 * 58 * 20 mm / 3.6 * 2.3 * 0.8 inch Weight: 98 g Package Include: 1 x Frequency Meter Note: The battery can be replaced.