Features: 2-8 km communication distance, suitable for hotels, shopping malls, underground parking lots, property communities, construction sites, etc. 16 channels, one-key switching, fast pairing with other walkie-talkies, and quick pairing is successful. Sensing antenna, high-power penetration, more stable signal, more comfortable communication, and effectively improve the stability and penetration of the signal. Built-in 2500mah rechargeable battery, long-lasting battery life, support USB charging, more convenient. High-strength non-slip shell, anti-drop, high temperature, low temperature, durable. Specifications: Model: N8 Frequency range: 400-470MHz Channel capacity: 16 Narrowband/Broadband: 12.5KHz/25KHz Battery capacity: 7.4V 2500mAh Color: Green, Yellow, Black, Grey(Optional) Item size: Approx. 11.5*5.5*3cm/4.53*2.17*1.18in Item weight: 141g/4.97oz Package size: 19.5*9*5cm/7.68*3.54*1.97in Package weight: 319g/11.25oz Package List: 1 * Walkie Talkie 1 * Battery Pack 1 * Charging Cable 1 * Antenna 1 * User Manual