The Invincible has a super powerful 10 speed new generation F1 motor that accommodates any woman's shape and is perfectly shaped to create the most intense orgasm ever experienced! The Invincible has a rechargeable battery with a magnetic USB charging port and included charger. When fully charged it will last for 60 min It's soft to the touch, smooth and waterproof design is made from medical grade silicone, making the Invincible easy to clean.