Nextech Quad Pack Tranceiver Radio (80 Channel 0.5 UHF)A great way to keep in touch with all the family or with colleagues around the workplace. This pack includes four lightweight hand held transceivers, with an open field transmission range up to 3km, and typical city range up to 1km. They run off 3 x AAA batteries, and have features you usually only find in more expensive models, including VOX hands free, monitor, call tones, roger beep, backlit display, headset connection, and CTCSS sub channels.