Have you ever heard of TrueSonic technology? If not, it's the state of the art resonating motor found in Revel Body's line of vibrators. What makes them so special, you ask? Well, the vibration range of these bad boys is 24-200Hz, compared to the 60-100Hz found in your average vibrators on the market today. Add to that more power, efficiency, and less noise... and you've got yourself something truly special in your hand.