Features Monitor: Enhances speech when the signal is too weak to be heard. Squelch level: 0-9 levels to suppress background noise and improve signal sensitivity and sound clarity. VOX: Allows for hands-free operation; adjusting the VOX level controls background noise. Scanning: Find the correct frequency to join communications easily and quickly. 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, ABS Frequency range: VHF 136-174 MHz, UHF 400-520 MHz Dimensions: 5.8 x 1.1 x 3.2 cm Color: Black Size: 18 x 11 x 9.5 cm Weight: 420 g Package Includes: Main unit Antenna Lanyard Back clip Battery Earphone Charger Instruction manual Headset