Retevis H777 compare with RT7

Retevis H777 compare with RT7 Let’s we check the Retevis H777 compare with RT7, this two radio is very deeply loved by the majority of users. But where is the difference? Retevis H777, SKU: A9104A, Much people love it, that because: 1.It’s function can meet the must requirement and is easy to operation. 2.It is…