This product is ok. I use it regularly but find some features dont work great. For example, the call-outs would be nice, but I often cant hear them over the sound of my own punches making it hard to react quickly enough to them before the next string is called out. As a result, I dont bother using that feature. Also, the music feature is nice, but you cant shuffle your playlist. If you want to hear the different music, you have to rebuild the playlist every time you use it. I would be really grateful if they changed this and built a shuffle feature into the program. Being a woman, I find the ring girl images kind of irritating (as though only men would ever use this program), but Im used to it being a female martial artist for the past 20 years. Would be nice if you could opt for images of boxers instead (male or female), which seems more relevant to me. Other than those things, it works well enough for what I need it for in that it gives you timed rounds with rests in between and music in the background.