Work decently well with my laptop. Great price for the quality. The pad size overall is too small to fit the ear pieces and the pad for the connection to the earmuffs does not exist. The strap is fastened in the wrong place in the shoe which pushes your foot too far forward. They were perfect as her red ruby slippers! Its as happy out of an iPhone with wav files as it is with the geek out450 or parasound zdac. The only criticism I have is that there is slightly more light peering up from the bottom. At the price, you get what you pay for so I cant really complain. If youre not familiar with how robotic vacuums operate, heres a quick breakdown -- models like this one and many of the lower-end machines just blindly roam around and pick up whatever they find. They also don?t fall off my feet, even when going up and down the stairs.