Fangrui Product Details Features 1. Monitor: Enhances Speech When The Signal Is Too Weak To Be Heard. 2. Squelch Level: 0-9 Levels, Help You Suppress Background Noise, Improve Signal Sensitivity And Sound Clarity. 3. Vox: Allows You To Free Your Hands When Youre Busy, And Adjusting The Vox Level Controls Background Noise. 4. Scanning: You Can Find The Correct Frequency You Are Talking On And Join Communications Easily And Quickly. 5. Voice Prompts: Functions And Features Are Easy To Understand; Voice Confirmation On Selection Is Ideal For New Users. Specification Pattern: Us, Eu, Au, Uk Calling Range: 3-5km Storage Channels: 128 Channels Walkie Talkie Type: Convenient Maximum Range: 5km-10km Material: Plastic Frequency Range: Vhf 136-174 Mhz, Uhf 400-520 Mhz Dimensions: 5.8 X 1.1 X 3.2 Cm Material: Abs Color: Black Size: 18 X 11 X 9.5 Cm Weight: 420 G Package Include: Main Unit Antenna Lanyard Back Clip Battery Earphone Charger Instruction Manual Headset