Frequently Asked Questions

Global leader in two way communication
Do I need a licence to use
this walkie talkie?
No, you don't need a licence,
you could use it directly.
Does the walkie talkie work
with other FRS walkie talkies
straight out of the box?
Yes, the walkie talkies can work with other
Retevis FRS walkie talkies straight out
of the box on the same frequency and
CTCSS/DCS.
Can i change the frequency?
According to FCC law, the frequency of
FRS radio,can't be changed; If you need a
customized walkie-talkies,contact us!
What range have they got?
What is the difference between
Retevis RT21 and RT28?
Generally speaking,it will reach to 1-1.5km
in the city,and will reach to 2-3km in open
area and seaside.Any further question,
please email us freely.
Battery capacity:
RT21: 1100 mAh or 3000 mAh
RT28: 1000mAh
Charging method:
RT21: Wall charging dock
RT28: USB charging cable and adapter