1、This frequency meter is small and portable. Easy to carry. You can put it into your pocket. 2、Fast frequency measurement. It is very quick to measure the frequency. No need to wait for the result. 3、Easy to Operate. No complicated setting. You can easily use it by following the instruction. 4、Frequency Range is between 50MHZ-4G. Error Value is between +-0.3MHZ. 5、Made of high quality material and fine craft. It is durable and reliable. Features:  1.This frequency meter is small and portable. Easy to carry. You can put it into your pocket. 2.Fast frequency measurement. It is very quick to measure the frequency. No need to wait for the result. 3.Easy to Operate. No complicated setting. You can easily use it by following the instruction. 4.Frequency Range is between 50MHZ- 2.4G. Error Value is between +- 0.3MHZ. 5.Made of high quality material and fine craft. It is durable and reliable. Specification: Name: walkie-talkie frequency meter Frequency Range: 50MHZ- 2.4G Mute Range: Digital/analog mute, automatic decoding Error Value: +- 0.3MHZ Working Voltage: 9V battery (not included) Product Size: Approx. 9.3x 5.7x2cm/ 3.6x 2.2x 0.7inch Package List: 1 x Frequency Meter Note:  Instruction 1. Pressing the left button for 2 seconds to boot, the boot display: AUTO 0.1K, enter the test mode. 2. The frequency meter does not need to press any button, the distance between the walkie-talkie and the frequency meter is controlled within 1 meter, the walkie-talkie presses and launches for about 3 seconds, the frequency meter can automatically display the frequency: the first row is the frequency rate, the second row is a mute (D starts with a digital mute, and C starts with an analog mute). 3. After measuring a channel, if you want to measure the second channel, press the left button of the frequency meter, and then follow the steps in step 2.