Zartek ZA-748 2-way radio is small, durable & compact. It has an extra long range which is terrain dependent (Indoors & Outdoor). The Li-ion battery has an operating time of up to 35 hours. This device is ideal for security use, factories, farming, hotels, events & heavy-duty use. Pre-programmed 16 channels.Power Output 500mW license free.Crystal clear audio.Long battery life and low battery alert.Channel announce.Exsternal microphone/speaker jack (single pin).LED light.One functional side key.Multi-functions: VOX, Scrambler, Call ring, Emergency alarm, Priority scan, Compander and Battery leve.Weight: 140g