About this item * LCD Display: LCD backlight display is convenient to use. Built-in LED torch can be used as two flashes to configure SOS light in case of emergency. The built-in transceiver prevents interference with 20 channels to greatly increase the privacy and security of your calls * Communication distance: City; About 100m to 300m; Suburb: About 300m to 800m; High visibility location: About 800m to 2km (varies depending on the environment. For obstacles such as walls, floors, etc., the distance of the call depends on the thickness. ) * EASY TO USE: T518 Walkie Talkie Built-in Vox feature allows you to send signals without pressing the push-to-talk button. Walkie Talkies automatically transmit weak sound. It may also be used as a simple baby monitor * Emergency Response: Simply adjust the channel to use. In case of emergencies (struggling outdoors, earthquakes, fire, etc.), it will quickly alert the caller to the phone * Set of 2 specific small power transceivers