They are programmed at the same frequency before they leave the factory and just on the same channel can communicate
Built-in Led torch and voice prompt function;Easy to figure out the channel and easy to use in dark environment
Original earpiece for true hands-free communication; and belt clip make them easy to carry
The 50 CTCSS/105 CDCSS keep you away from the irrelevant call which is allow you do some private exchanges
Simple and Convenient return process;1 year warranty and 30 days no reason return including the accessories

Product Description

Specification
Frequency Range: UHF: 400-470MHz
Memory Channel: 16
CTCSS/DCS function
Low battery alarm
Power saving function
Chinese and English voice prompt
PC software programmable

1500mAH Li-ion battery capacity:You can charge 2-3 hoursthen you can use it for 8-9 hours continuous use or longer

Easy to use:It can be use for all ages.With ityou can communicate with your every family member and friend freely

180g weight is light and small: The radio is easy to carryin your hands feel is smooth and good.The package includes belt clipyou can even put it at the waist or other body location

Time-out-timer(TOT):
Prevent?the?user?to?occupy?the?channel?for?a?long?time

Scanning:
Allow you scan either channels or privacy codes within a channel to locate conversations in progress

Busy Channel Lock Out:
Prevents transmission whenever the unit detects another conversation on the same channel?

Emergency Alarm:
When the user is in danger situation press the Emergency Alarm button to call for help(should program to set up)

Pocket includes:
10? Retevis H-777 2 way radio
10? Antenna
10? Earpiece
10? 1500 mAh Li-ion battery pack
10?? Charger
10?? Belt clip
10?? Hand Strap
10?? English User's manual

Why can I hear the voices clearly from other group??sometimes ??my voice is intermittent:
Please check whether the MIC is b