Transmitting power: maximum 0.5W
Talking distance: about 1 km in an open area outdoors, about 500 meters for outdoor use with buildings, and about 5 floors for indoor use.
Calling ringtone selection: This machine has 5 different call tones to choose from, suitable for personalized you.
Channel scanning function: The machine automatically scans 20 channels in sequence and can select an effective channel currently in use.
Used batteries: 4 AAA batteries per machine