The difference between Retevis RT21 and other

Comparison of Retevis H-777, Retevis RT21, H-777S Retevis RT21 is  have the CTCSS and DCS function, Retevis RT21 work well for all various business, and it will have the good performance for hotel,church,restaurant,school,construction site and other business. The belt clip of RT21 is relatively large than these,Every radio have their belt clip and switch the […]

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