First the good news.
If you want ehx memory man 'style' analog delay at a bargain price then this is a pretty good pedal. Maximum delay is reported as 550ms (that is probably about right) and it sounds pretty dark but if you are looking at this then you already know that don't you? If you are looking for long delay times and super clear repeats then, as others have said look elsewhere, but if you want the 'lofi' analog decay within the half second parameter then, for the price, this is a pretty good bet. The delays sound warm, the controls are straightforward (as long as you are careful with the feedback control as the pedal as an eagerness to self-oscillate), it comes with a power supply and that's all you need to know...
BUT the not so good news.
The modulation controls are pretty crazy and whilst you can get a nice modulated delay sound with the depth control a fraction off zero and the switches on triangle wave and chorus, anything more and you are in head swimming territory. The faster speed and the square wave modulations continue further into this 'experimental' territory. I haven't tried it with an expression pedal to control the modulation but I suspect that anyone but the most psychedelically inclined sonic experimenters will end up leaving the modulation well alone or on a very minimal setting.
I have managed to get a useable, though quite intense, chorus and a vibrato effect by playing with the controls but it's not exactly easy to dial in and I like, most I suspect, have perfectly good pedals to do these jobs for me.
I bought this as an analog delay pedal and, whilst the issues with the usability of the modulation controls are a negative, they don't stop this pedal being a success as a delay. Though it is a compromised success and if you are looking for a cheap, straightforward analog delay, without too much weird modulation, then you may want to consider the 'memory toy' for a little less money. Although when you factor in the fact this doesn't come with a power supply there really isn't much in it and you can always leave the modulation off!