16 Channel Intercom- 16 channels can be used by multiple teams at the same time. Ideal for construction, security or outdoor entertainment. Long Lasting Rechargeable Battery- Built-in large capacity rechargeable battery and 2 charging stations can charge 2 walkie talkies at the same time. Quick charge and 8-72 hours battery life depending on your usage. Emergency Alarm Function- High brightness flashlight, it can enlighten you even in the darkest night. Easy to use, even for children. Just press a button to talk. Effective Range 1-5KM- The long distance walkie talkie can transmit and receive up to 5 kilometers away, allowing you to keep in touch with friends and family. family. Great for backcountry survival, biking, hiking and more. Perfect for Many Situations- Can be used in many situations, walkie talkie to guide your team on a construction site, for communication between security guards or for long distance communication while hiking. Specification: Frequency Range: 400-480 (MHz)