Dual motors provide 10 independent speeds of rotating pleasure in the shaft and vibration in the stimulator, giving you full control over how the experience builds. Body-safe Silicone and waterproof submersible - IPX7. State-of-the-art memory chip resumes on last speed used. USB rechargeable - charging cord included. 3.75 in x 1.25 in/9.5 cm x 3.25 cm (shaft). 2 in x .75 in/5 cm x 2 cm (stimulator).