good, I took it for a gift, ben missed! the system is great, the concept of hell, but in reality; it falls flat! Indeed, whatever the mode, can not find a comfortable position for the product is really effective or it suddenly blocks and no effect ("vibro"), or it remains "coasting" and not remain in place! in short, it has the idea but it's probably not a good model for us (pulses) a manual would be on for once (on the right positions for optimal use) very disappointed with the product (especially considering the price, but that I keep it for me)
