You got reverb and delay in one pedal. Pedal remembers your previous setting as you switch between these two.
The quality is quite poor - the knob sensitivity is lacking on all of them (example- feedback goes from "cant hear nothing" to 4 repeats, so does the mix control on reverb, desired delay time is hard to adjust without tap tempo...
But its all to be expected - money dictates the quality.)
If you have need for one delay and reverb to stay , its a good thing , once u play enough on it and find the desired tone, but if you're going to switch the delay tempo and lushness of reverb, its drawbacks are going to get on your nerves very soon.