I bought this unit to put under my work desk. I have a bad knee that hurts over time when sitting at my desk. I thought a vibrating platform might alleviate the pain. It does help. It has a nice low setting and with a wide range of speed increments.I was impressed at the power of the unit.. I wasn't expecting it to be as solid of a vibration rocker. I really expected it to be an enhanced vibrator massage type machine.. but this is actually a rocker. It rocks from side to side to generate the vibration.. This give it a wide range of motion. I make good use of a standup rocker now, so I am familiar with them. This thing is surprisingly strong and actually reminds me of the large standup machine I use. It is also very quiet except for the beeping when it turns on, off etc.. hahaaAll in all I think this unit is a very good value. I would recommend it.