All of the radio was be set up to the same frequency,they can work with each other just on the same channel when out of the box.By the way,USB programming Cable included then connects your radio to your computer for fast and easy programming.If you are outside and you want to change the frequency,it also allowed to programming the radio manually by the keyboard.

Function:
Wide/Narrow Band(25kHz/12.5kHz)
Voice companding
Monitor function
Busy lockout function
Scanning function
Time-out Timer (TOT) function
LCD display
Battery voltage display function
Channel name display and editing functions
Keypad lock function
Emergency alarm function
Low battery alarm
Power saving function
Chinese and English voice prompt
PC software programmable

Basic Descriptions
Rated Voltage: 7.4V DC10%
Output power: ≤ 5W
Battery type: Li-ion battery
Battery capacity: 1400mAh
Specification
Frequency stability: 2.5ppm
Carier wave tolerance: 5ppm
Modulation character: 6 dB per fold frequency patch
Emission current: < 1.6A(5W)
CTCSS / DCS:0.50.1kHz(Wide) 0.30.1kHz(Narrow)
Inter modulation: 8-12mv
High/Low TX power selectable: 4W/1W
Adjacent channel selectivity(wide/narrow):

Product Features

• Dual band two way radio;UHF 400-520MHz;VHF 136-174MHz;high/low power(5W/1W)
• High/Low power select can offer you long range and meets your all needs when you working in different environment
• Crystal clear audio make you need not yell to your partner even in some noisy environment
• Manual keypad programmable and easy to operate even if you are not a radio expert and you will find all the controls
• Simple and Convenient return process;1 year warranty and 30 day return with no questions asked