Cyclone X 10 USB

Pretty interesting

Bought this to use with Eroges and visual novels. Buy this while stock last, the manufacturers have stopped production. But overall, this item is quite amazing. The way it syncs with the eroge is really good as well. You might want to buy a different replacement cup elsewhere as the default one is not very stimulating. Still good for stamina training though. Though the price is on the heavier side.