Do it anywhere with the stable sucker base.
The crystal probe is soft and flexible,with 6 varying beads that start small and get gradully larger for easy insertion.
You can fully enjoy the beads as it vibrates continously as you desired.Go from low to insanely fast with the wired controller.
Battery: 2 x AAA(Not included)
Effective Length: 15cm / 5.9″
Max.Diameter: 3.5cm / 1.38″
Package Dimensions: 25.5*16*9cm / 10*6.3*3.54″