When and where do you need this Wireless Bufeng device? - When you are in a construction area, you need to communicate efficiently with your team members. - For security guards, you might feel this is a great tool for your work and real-time conversations. Very useful for events and festivals for quick communication. - When you travel by car with a group of friends, this helps to maintain constant communication between your colleagues. How far can this wireless device connect? - Communication range: about 2-4 km (depends on the actual situation). Functions: 1. Frequency: 420-450 MHz 2. 16 channels 3. 1500 mAh Li-ion battery 6. VOX function 7. Voice prompt 8. PC programming 9. Emergency alarm 10. Smart charging 11. Battery saving 12. Low voltage alert 13. Timeout timer 14. Flashlight When contacting, let us know you are from Haraj. To pay the commission and clear conscience. Condition: New