Powerful vibrations, conveniently controllable by remote control. This rechargeable vibro-ball duo features an elastic return strap and seven vibration modes. The remote control allows for easy and pleasant management of the vibrations. Both the vibro balls and remote control can be charged simultaneously with the two included USB charging cables. Total length is 21.1 cm (with return strap) and maximum diameter is 3.8 cm. Made from silicone with a PU coating.